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MAX77860EWG+

MAX77860EWG+

  • 厂商:

    AD(亚德诺)

  • 封装:

    -

  • 描述:

    MAX77860EWG+

  • 数据手册
  • 价格&库存
MAX77860EWG+ 数据手册
EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC General Description Benefits and Features The MAX77860 is a high-performance single input switch mode charger that features USB Type-C CC detection capability in addition to reverse boost capability and a Safeout LDO. ● Single-Cell Switch Mode Charger • Up to 14V Protection • 4.0V to 13.5V Input Operating Range • Switching Charger with D+/D- Charger Detection • Up to 4.0A Input Current Limit with Adaptive Input Current Limit (AICL) • Up to 3.15A Battery Charging Current Limit • Optional External Sense Resistor • CC, CV, and Die Temperature Control • Supports USB-OTG Reverse Boost, up to 1.5A Current Limit • Master-Slave Charging Capability, up to 6A Charge Current • Integrated Battery True-Disconnect FET • Rated up to 9ARMS, Discharge Current Limit (Programmable) This switched-mode battery charger with two integrated switches, provides small inductor and capacitor sizes, programmable battery charging current, and is ideally suited for portable devices such as smartphones, IoT devices, and other Li-ion battery powered electronics. The charger features a single input, which works for both USB and high voltage adapters. It supports USB Type-C CC detection under BC 1.2 specification, and the power-path switch is integrated in the chip. All MAX77860 blocks connected to the adapter/USB pin are protected from input overvoltage events up to 14V. The USB-OTG output provides trueload disconnect and is protected by an adjustable output current limit. It has an input current limit up to 4.0A and can charge a single-cell battery up to 3.15A. When configured in reverse-boost mode, the IC requires no additional inductors to power USB-OTG accessories. The switching charger is designed with a special CC, CV, and die temperature regulation algorithm, as well as I2C programmable settings to accommodate a wide range of battery sizes and system loads. The on-chip ADC can help monitor the charging input voltage/current, battery voltage, charging/ discharging current, and the battery temperature. The MAX77860 communicates through an I2C 3.0 compatible serial interface consisting of a bidirectional serial data line (SDA) and a serial clock line (SCL). The IC is available in a 3.9mm x 4.0mm, 81-bump (9 x 9 array), 0.4mm pitch, wafer-level package (WLP). Applications ● ● ● ● USB Type-C Charging for 1S Li-ion Applications Mobile Point-of-Sale Devices Portable Medical Equipment Portable Industrial Equipment 19-100290; Rev 2; 6/19 ● USB Type-C Detection • Integrated VCONN Switch • CC Pin • D+/D- Detection for USB HVDCP • BC 1.2 Support ● One Safeout LDO ● I2C-Compatible Interface Ordering Information appears at end of data sheet. MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Simplified Block Diagram MAX77860 UP TO 4.0A CHGIN 16V WITHSTANDING 2.2µF VBUSDET INOKB VCONNIN DP DN CC1 CC2 BYP ISENSE, AND OTG SWITCH, COMPARATOR TYPE-C CC ADAPTOR DETECTION OVPENB 2x10µF 3.15A SWITCHING CHARGER AND REVERSE BOOST 0.47µH SYS 2x10µF DETBATB REF AND BIAS ADC VIO SCL SDA INTB ONKEY SWI1 SWI2 www.maximintegrated.com I²C SERIAL PORT AND REGISTERS AND CONTROL SAFEOUT LDO LI-ION BATTERY 4.9V TO USB PHY 1µF Maxim Integrated | 2 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC TABLE OF CONTENTS General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 81-WLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical Characteristics—Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Electrical Characteristics—SAFEOUT LDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Electrical Characteristics—SAR ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Electrical Characteristics—USB Type-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 MAX77860 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Functional Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Switching Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 USB Data Contact Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 DP and DN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Adapter Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Charging Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 External Input OVP Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Input Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Input-Voltage Regulation Loop and Adaptive Input Current Limit (AICL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Battery Detect Input Pin (MDETBATB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Charge States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Dead-Battery Prequalification State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Fast-Charge Constant Current State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Topoff State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Done State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Timer Fault State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Thermal Shutdown State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Main Battery Differential Voltage Sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 www.maximintegrated.com Maxim Integrated | 3 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC TABLE OF CONTENTS (CONTINUED) OTG Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Master-Slave Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 S-Wire I Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 S-Wire Interrupt (Slave Fault Detection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Programming the SLAVE Charging Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 ONKEY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Main Battery Overcurrent Protection Due to Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 SAFEOUT LDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 On-Chip ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 USB Type-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Register Layout Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Register Map and Detailed Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Top Level I2C Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Charger Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Charger Register Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Register Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Interrupt, Mask, Okay, and Detail Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 USB Type-C Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Master Slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 www.maximintegrated.com Maxim Integrated | 4 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC LIST OF FIGURES Figure 1. Charging Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 2. DETBATB Internal Circuitry and System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 3. Charger State Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 4. Li+/Li-Poly Charge Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 5. Battery Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Figure 6. Battery-Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Figure 7. Battery-Boost (OTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Figure 8. No Charge-Buck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Figure 9. Charge-Buck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Figure 10. Thermal Shutdown Regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Figure 11. Schematic with Parasitic Capacitances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Figure 12. S-Wire Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Figure 13. SW1 and SW2 Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Figure 14. ONKEY Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Figure 15. Overcurrent Protection Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 www.maximintegrated.com Maxim Integrated | 5 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC LIST OF TABLES Table 1. Supported Adapter Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Table 2. Top Level Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Table 3. Functional Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Table 4. PMIC Register (0x20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Table 5. Interrupt Source (0x22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Table 6. Interrupt Source Mask (0x23) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Table 7. SYSTEM Interrupt (0x24) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Table 8. SYSTEM Interrupt Source Mask (0x26) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Table 9. SAFEOUT Control Register (0xC6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Table 10. Charger Interrupt (0xB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Table 11. Charger Interrupt Mask (0xB1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Table 12. Charger Status (0xB2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Table 13. Charger Details 00 (0xB3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Table 14. Charger Details 01 (0xB4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Table 15. Charger Details 02 (0xB5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Table 16. Charger Configuration 00 (0xB7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Table 17. Charger Configuration 01 (0xB8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Table 18. Charger Configuration 02 (0xB9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Table 19. Charger Configuration 03 (0xBA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Table 20. Charger Configuration 04 (0xBB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Table 21. Charger Configuration 05 (0xBC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Table 22. Charger Configuration 06 (0xBD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Table 23. Charger Configuration 07 (0xBE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Table 24. Charger Configuration 09 (0xC0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Table 25. Charger Configuration 10 (0xC1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Table 26. Charger Configuration 11 (0xC2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Table 27. Charger Configuration 12 (0xC3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Table 28. BC_INT (0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Table 29. CC_INT (0x01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Table 30. BC_INTMASK (0x02) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Table 31. CC_INTMASK (0x03) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Table 32. BC_STATUS1 (0x04) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Table 33. BC_STATUS2 (0x05) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Table 34. CC_STATUS1 (0x06) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Table 35. CC_STATUS2 (0x07) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Table 36. BC_CTRL1 (0x08) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Table 37. BC_CTRL2 (0x09) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Table 38. CC_CTRL1 (0x0A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 www.maximintegrated.com Maxim Integrated | 6 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC LIST OF TABLES (CONTINUED) Table 39. CC_CTRL2 (0x0B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Table 40. CC_CTRL3 (0x0C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Table 41. CHGIN_ILIM1 (0x0D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Table 42. CHGIN_ILIM2 (0x0E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Table 43. S-Wire Interrupt (0x80) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Table 44. S-Wire Interrupt Mask (0x81) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Table 45. Slave Charger 1 CC (0x82) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Table 46. Slave Charger 2 CC (0x83) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Table 47. S-Wire 1 Readback (0x84) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Table 48. S-Wire 2 Readback (0x85) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Table 49. S-Wire Status (0x86) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Table 50. ADC_CONFIG1 (0x50) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Table 51. ADC_CONFIG2 (0x51) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Table 52. ADC_CONFIG3 (0x52) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Table 53. ADC_DATA_CH0 (0x53) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Table 54. ADC_DATA_CH1 (0x54) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Table 55. ADC_DATA_CH2 (0x55) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Table 56. ADC_DATA_CH3 (0x56) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Table 57. ADC_DATA_CH4 (0x57) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Table 58. ADC_DATA_CH5 (0x58) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Table 59. ADC_DATA_CH6 (0x59) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Table 60. ADC_DATA_CH7 (0x5A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Table 61. ADC_OFFSET_CH1 (0x5B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Table 62. ADC_OFFSET_CH3 (0x5C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Table 63. ADC_OFFSET_CH4 (0X5D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 www.maximintegrated.com Maxim Integrated | 7 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Absolute Maximum Ratings Operating Junction Temperature (TJ) Range ....... -40°C to +85°C Junction Temperature (TJ) Range ...................... -40°C to +150°C Storage Temperature Range .............................. -40°C to +150°C Soldering Temperature (reflow) ........................................ +260°C Switching Charger CHGIN to GND ..................................................... -0.3V to 16V BYP to GND .......................................................... -0.3V to 16V PVL to GND ............................................................ -0.3V to 6V AVL to GND ............................................................ -0.3V to 6V BAT_SP to GND ......... -0.3V, BATT - 0.3V to 6V, BATT + 0.3V BATT to GND .......................................................... -0.3V to 6V SYS to GND ............................................................ -0.3V to 6V DETBATB to GND ......................................-0.3V to VIO + 0.3V VBUSDET to GND .................................................. -0.3V to 20V OVPENB to GND ...................................... -0.3V to AVL + 0.3V BST to PVL ........................................................... -0.3V to 16V BST to CHGLX ....................................................... -0.3V to 6V INOKB to GND .......................................... -0.3V to SYS + 0.3V BAT_SN to GND .................................................. -0.3V to 0.3V CHGPG to GND ................................................... -0.3V to 0.3V CHGLX Continuous Current ....................................... 3.5ARMS CHGPG Continuous Current ...................................... 3.5ARMS SYS Continuous Current ............................................ 4.5ARMS BATT Continuous Current .......................................... 4.5ARMS CHGIN Continuous Current ........................................... 3ARMS BYP Continuous Current ............................................... 3ARMS CSP to GND ............... -0.3V, BATT - 0.3V to 6V, BATT + 0.3V CSN to GND ............... -0.3V, BATT - 0.3V to 6V, BATT + 0.3V SLAVE to GND ..................................... -0.3V to SYS_A + 0.3V ONKEY to GND .......................................-0.3V to BATT + 0.3V SWI1 to GND........................................ -0.3V to SYS_A + 0.3V SWI2 to GND........................................ -0.3V to SYS_A + 0.3V CHGIND to GND ....................................... -0.3V to AVL + 0.3V Safeout LDO SAFEOUT to GND ......................... -0.3V to 6V, CHGIN + 0.3V USB Type-C DP, DN to GND ....................................-0.3V to VCCINT + 0.3V CC1, CC2 to GND ................................-0.3V to VCCINT + 0.3V VCONNIN to GND .................................-0.3V to VCCINT + 0.3V VCONNBTEN_SYS to GND ....................................... -0.3V to 6V ADC THMB, THM to GND ...............................-0.3V to BATT + 0.3V I2C and Interface Logic VIO to GND .............................................................. -0.3V to 6V SDA, SCL to GND ...................................... -0.3V to VIO + 0.3V SYS_A, SYS_Q to GND .......................................... -0.3V to 6V INTB ..................................................... -0.3V to SYS_A + 0.3V TEST_, VCCTEST to GND ....................................... -0.3V to 6V GND_ to GND ...................................................... -0.3V to 0.3V Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information 81-WLP Package Code W813C3+1 Outline Number 21-0775 Land Pattern Number Refer to Application Note 1891 Thermal Resistance, Four-Layer Board: Junction to Ambient (θJA) 49°C/W Junction to Case (θJC) N/A For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. www.maximintegrated.com Maxim Integrated | 8 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics (VSYS = +3.6V, VCHGIN = 0V, VIO = 1.8V, TA = -40°C to +85°C, typical value for TA is +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS All circuits off, BATT = 3.6V 25 50 µA USB Type-C on, all other circuits off, BATT = 3.6V 90 150 µA SUPPLY CURRENT Shutdown Supply Current (BATT) No Load Supply Current (BATT) ISHDN INL SYS INPUT RANGE SYS Undervoltage Lockout Threshold VSYS_UVLO VBATT falling, 200mV hysteresis 2.4 2.5 2.6 V SYS Overvoltage Lockout Threshold VSYS_OVLO VBATT rising, 200mV hysteresis 5.2 5.36 5.52 V Low SYS Thresholds Range programmable through LSDAC register, VSYS falling, production tested at 3.60V setting 3.6 V Low SYS Hysteresis Range programmable through LSHYST register, production tested at 100mV setting 100 mV TJ rising 165 °C Thermal Shutdown Hysteresis 15 °C Thermal Interrupt 1 120 °C Thermal Interrupt 2 140 °C THERMAL SHUTDOWN Thermal Shutdown Threshold TSHDN LOGIC AND CONTROL INPUTS SCL, SDA Input Low Level TA = +25°C SCL, SDA Input High Level TA = +25°C SCL, SDA Input Hysteresis TA = +25°C SCL, SDA Logic Input Current VIO = 3.6V SCL, SDA Input Capacitance (Note 1) SDA Output Low Voltage Sinking 20mA 0.4 V Output Low Voltage (INTB) ISINK = 1mA 0.4 V Output High Leakage (INTB) Interrupt Debounce Filter Timer www.maximintegrated.com VSYS = 5.5V, TA = +25°C 0.3 x VIO 0.7 x VIO V 0.05 x VIO -10 V +10 10 -1 V 0 VSYS = 5.5V, TA = +85°C 0.1 LOWSYS 16 µA pF +1 μA ms Maxim Integrated | 9 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics (continued) (VSYS = +3.6V, VCHGIN = 0V, VIO = 1.8V, TA = -40°C to +85°C, typical value for TA is +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 1000 kHz I2C-COMPATIBLE INTERFACE TIMING FOR STANDARD, FAST, AND FAST-MODE PLUS (Note 1) Clock Frequency Hold Time (Repeated) START Condition fSCL tHD;STA 0.26 µs CLK Low Period tLOW 0.5 µs CLK High Period tHIGH 0.26 µs Setup Time Repeated START Condition tSU;STA 0.26 µs DATA Hold Time tHD:DAT 0 µs DATA Valid Time tVD:DAT 0.45 µs DATA Valid Acknowledge Time tVD:ACK 0.45 µs DATA Setup time tSU;DAT 50 ns Setup Time for STOP Condition tSU;STO 0.26 µs tBUF 0.5 µs Bus-Free Time Between START and STOP Pulse Width of Spikes that must be Suppressed by the Input Filter (Note 1) 50 ns I2C-COMPATIBLE INTERFACE TIMING FOR HS-MODE (CB = 100pF) (Note 1) Clock Frequency Hold Time (Repeated) START Condition fSCL CB = 100pF 3.4 MHz tHD;STA 160 ns CLK Low Period tLOW 160 ns CLK High Period tHIGH 60 ns Setup Time Repeated START Condition tSU;STA 160 ns DATA Hold Time tHD:DAT 0 ns DATA Setup time tSU;DAT 10 ns Setup Time for STOP Condition tSU;STO 160 ns Pulse Width of Spikes that must be Suppressed by the Input Filter (Note 1) 10 ns I2C-COMPATIBLE INTERFACE TIMING FOR HS-MODE (CB = 400pF) (Note 1) Clock Frequency Hold Time (Repeated) START Condition www.maximintegrated.com fSCL tHD;STA CB = 400pF 1.7 160 MHz ns Maxim Integrated | 10 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics (continued) (VSYS = +3.6V, VCHGIN = 0V, VIO = 1.8V, TA = -40°C to +85°C, typical value for TA is +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CLK Low Period tLOW 320 ns CLK High Period tHIGH 120 ns Setup Time Repeated START Condition tSU;STA 160 ns DATA Hold Time tHD:DAT 0 ns DATA Setup time tSU;DAT 10 ns Setup Time for STOP Condition tSU;STO 160 ns Pulse Width of Spikes that must be Suppressed by the Input Filter (Note 1) 10 ns Note 1: Design guidance only, not tested during final test. Note 2: The CHGIN input must be less than VOVLO and greater than both VCHGIN_UVLO and VCHGIN2SYS for the charger to turn on. Note 3: The input voltage regulation loop decreases the input current to regulate the input voltage at VCHGIN_REG. If the input current is decreased to ICHGIN_REG_OFF and the input voltage is below VCHGIN_REG, then the charger input is turned off. Note 4: Production tested in charger DC-DC low-power mode (CHG_LPM bit = ‘1). Note 5: Production tested to ¼ of the threshold with LPM bit = ‘1 (¼ FET configuration). Electrical Characteristics—Charger (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VOVLO V CHGIN INPUT Operating Voltage CHGIN Overvoltage Threshold (Note 2) CHGIN Overvoltage Threshold Hysteresis CHGIN Overvoltage Delay (Note 1) www.maximintegrated.com 3.2 VCHGIN-OVLO VCHGIN Rising; CHGIN_OVP = 00 13.4 13.7 14 VCHGIN Rising; CHGIN_OVP = 01 9.9 10.2 10.5 VCHGIN Rising; CHGIN_OVP = 10 7.8 8 8.3 VCHGIN Rising; CHGIN_OVP = 11 5.65 5.85 6.05 VCHGIN Falling; CHGIN_OVP = 00 300 VCHGIN H- VCHGIN Falling; CHGIN_OVP = 01 350 OVLO VCHGIN Falling; CHGIN_OVP = 10 250 VCHGIN Falling; CHGIN_OVP = 11 300 VCHGIN rising, 100mV overdrive, not production tested 10 VCHGIN falling, 100mV overdrive, not production tested 20 TD-OVLO V mV μs Maxim Integrated | 11 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER VBUSDET to GND Minimum Turn-On Threshold Range (Note 2) VBUSDET to GND Minimum Turn-On Threshold Accuracy VBUSDET to SYS Minimum Turn-On Threshold (Note 2) VBUSDET Turn-On Threshold Delay SYMBOL VVBUSDET_UV LO VVBUSDET_UV LO VVBUSDET2SY S TD-UVLO CONDITIONS MIN 4.5 4.6 V VSYS + 0.12 VSYS + 0.20 VSYS + 0.28 V VVBUSDET rising, 50mV hysteresis, when valid CHGIN input is detected Not production tested 10 CHGIN Adaptive Voltage Regulation Threshold Accuracy VCHGIN_REG 4.8V setting 4.7 Programmable, 500mA default, production tested at 500mA, 1800mA, 4000mA settings only 0.1 www.maximintegrated.com IINLIMIT V 4.4 4.2 VCHGIN Input Current Limit 5.1 VVBUSDET rising, 4.5V setting Programmable at 4.2V, 4.6V, 4.7V, and 4.8V (Note 3) IIN UNITS 4.5 VCHGIN_REG CHGIN Supply Current MAX VVBUSDET rising, 200mV hysteresis, programmable at 4.5V, 4.9V, 5.0V, and 5.1V (Note 2) CHGIN Adaptive Current Regulation Threshold Range (Note 3) CHGIN Current Limit Range TYP 4.8 μs 4.8 V 4.9 V 4 A mA VCHGIN = 2.4V, the input is undervoltage and RINSD is the only loading, CHGIN_PD_FST = 0 (default) 0.075 VCHGIN = 5.0V, charger disabled, CHGIN_PD_FST = 0 (default) 0.17 0.5 VCHGIN = 5.0V, charger enabled, VSYS = VBATT = 4.5V (no switching, battery charged), CHGIN_PD_FST = 0 (default) 2.7 4 VCHGIN = 5.0V, charger enabled, VBATT = 3.8V, 500mA input current setting, TA = +25°C 462.5 487.5 500 VCHGIN = 5.0V, charger enabled, VBATT = 3.8V, 1800mA input current setting, TA = +25°C 1710 1755 1800 VCHGIN = 5.0V, charger enabled, VBATT = 3.8V, 1800mA input current setting, TA = 0°C to +85°C 1667 1755 1843 VCHGIN = 5.0V, charger enabled, VBATT = 3.8V, 4000mA input current setting, TA = +25°C 3800 3900 4000 VCHGIN = 5.0V, charger enabled, VBATT = 3.8V, 4000mA input current setting, TA = 0°C to +85°C 3705 3900 4095 mA Maxim Integrated | 12 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CHGIN Self-Discharge Down to UVLO Time tINSD CHGIN Input SelfDischarge Resistance RINSD CHGINOK to Start Switching Tstart CONDITIONS MIN TYP Time required for the charger input to cause a 10µF input capacitor to decay from 6.0V to 4.3V, CHGIN_PD_FST = 0 (default) 100 CHGIN_PD_FST = 0 (default) 35 CHGIN_PD_FST = 1 7.3 MAX UNITS ms kΩ 26 ms SWITCH IMPEDANCES AND LEAKAGE CURRENTS CHGIN to BYP Resistance RIN2BYP Bidirectional 0.0144 0.04 Ω CHGLX High-Side Resistance RHS 0.0327 0.1 Ω CHGLX Low-Side Resistance RLS 0.0543 0.14 Ω RBAT2SYS 0.0128 0.04 Ω BATT to SYS Dropout Resistance CHGIN to BATT Dropout Resistance CHGLX Leakage Current BST Leakage Current BYP Leakage Current SYS Leakage Current www.maximintegrated.com RIN2BAT Calculation estimates a 0.04Ω inductor resistance (RL) 0.0999 Ω RIN2BAT = RIN2BYP + RHS + RL + RBAT2SYS CHGLX = CHGPG or BYP, TA = +25°C 0.01 CHGLX = CHGPG or BYP, TA = +85°C 1 BST = 5.5V, TA = +25°C 0.01 BST = 5.5V, TA = +85°C 1 VBYP = 5.5V, VCHGIN = 0V, VCHGLX = 0V, charger disabled, TA = +25°C 0.01 VBYP = 5.5V, VCHGIN = 0V, VCHGLX = 0V, charger disabled, TA = +85°C 1 10 10 µA µA 10 µA VSYS = 0V, VBATT = 4.2V, charger disabled, TA = +25°C 0.01 VSYS = 0V, VBATT = 4.2V, charger disabled, TA = +85°C 1 10 µA Maxim Integrated | 13 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL IMBAT BATT Quiescent Current (ISYS = 0A, IBYP = 0A ) IMBDN IMBAT CONDITIONS MIN TYP MAX VCHGIN = 0V, VSYS = 0V, VBATT = 4.2V, external QBAT is off, TA = +25°C 20 30 VCHGIN = 0V, VSYS = 0V, VBATT = 4.2V, external QBAT is off, TA = +85°C 20 VCHGIN = 0V, VBATT = 4.2V, external QBAT is on, main battery overcurrent protection disabled, TA = +25°C 15.3 VCHGIN = 0V, VBATT = 4.2V, external QBAT is on, main battery overcurrent protection enabled, TA = +25°C 20 VCHGIN = 0V, VBATT = 4.2V, external QBAT is on, main battery overcurrent protection enabled, TA = +85°C 20 VSYS = 4.2V, VBATT = 0V, charger disabled, TA = +25°C 0.01 VSYS = 4.2V, VBATT = 0V, charger disabled, TA = +85°C 1 VCHGIN = 5V, VBATT = 4.2V, QBAT is off, main battery overcurrent protection disabled, charger enabled (done mode), TA = +25°C 3 VCHGIN = 5V, VBATT = 4.2V, QBAT is off, main battery overcurrent protection disabled, charger enabled (done mode), TA = +85°C 3 VCHGIN = 0V, VBATT = 4.2V, external QBAT is on, main battery overcurrent protection disabled, TA = +85°C 10 UNITS µA 10 15.3 CHARGER DC-DC BUCK Minimum ON Time tON-MIN 75 ns Minimum OFF Time tOFF 75 ns www.maximintegrated.com Maxim Integrated | 14 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER Current Limit (Note 5) SYMBOL ILIM CONDITIONS MIN TYP MAX TA = 0°C to +85°C, IND = '0 (0.47µH inductor option), production tested at ILIM = 00 setting, ILIM = 00 (3.00A out) (Note 4) 4.15 5.05 5.95 TA = 0°C to +85°C, IND = '0 (0.47µH inductor option), production tested at ILIM = 00 setting, ILIM = 01 (2.75A out) (Note 4) 4.75 TA = 0°C to +85°C, IND = '0 (0.47µH inductor option), production tested at ILIM = 00 setting, ILIM = 10 (2.50A out) (Note 4) 4.45 TA = 0°C to +85°C, IND = '0 (0.47µH inductor option), production tested at ILIM = 00 setting, ILIM = 11 (2.25A out) (Note 4) 4.15 TA = 0°C to +85°C, IND = '1 (1.0µH inductor option), production tested at ILIM = 11 setting, ILIM = 00 (3.00A out) (Note 4) 4.6 TA = 0°C to +85°C, IND = '1 (1.0µH inductor option), production tested at ILIM = 11 setting, ILIM = 01 (2.75A out) (Note 4) 4.3 TA = 0°C to +85°C, IND = '1 (1.0µH inductor option), production tested at ILIM = 11 setting, ILIM = 10 (2.50A out) (Note 4) 4 TA = 0°C to +85°C, IND = '1 (1.0µH inductor option), production tested at ILIM = 11 setting, ILIM = 11 (2.25A out) (Note 4) UNITS A 3 3.7 4.4 REVERSE BOOST BYP Voltage Adjustment Range Reverse Boost Quiescent Current IBYP Reverse Boost Converter Maximum Output Current Reverse Boost BYP Voltage in OTG Mode www.maximintegrated.com 2.6V/VBATT < 4.5V, adjustable from 3V to 5.5V, min 3 2.6V/VBATT < 4.5V, adjustable from 3V to 5.5V, max 5.5 Not switching: output forced 200mV above its target regulation voltage 3.6V < VBATT < 4.5V VBYP.OTG V 5.1V setting 1150 µA 2 4.94 A 5.1 5.26 V Maxim Integrated | 15 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER CHGIN Output Current Limit SYMBOL ICHGIN.OTG.LI M Reverse Boost Output Voltage Ripple (Note 1) CONDITIONS MIN TYP MAX 3.4V < VBATT < 4.5V, TA = +25°C, OTG_ILIM = 00 500 550 3.4V, TA = +25°C, OTG_ILIM = 01 (Note 1) 900 990 3.4V, TA = +25°C, OTG_ILIM = 10 (Note 1) 1200 1320 3.4V < VBATT < 4.5V, TA = +25°C, OTG_ILIM = 11 1500 1650 UNITS mA Discontinuous inductor current (i.e., skip mode) ±150 Continuous inductor current ±150 mV CHARGER BATT Regulation Voltage Range VBATTREG BATT Regulation Voltage Accuracy Fast-Charge Current Program Range Fast-Charge Current Accuracy Fast-Charge Currents IFC Programmable in 12.5mV steps (4 bits), production tested at 4.2V and 4.5V only 4.2 4.5 4.2V and 4.5V settings, TA = +25°C -0.75 +0.75 4.2V and 4.5V settings, TA = 0°C to +85°C -1 +1 100mA to 3.15A in 50mA steps, production tested at 500mA and 3000mA settings 0.1 3.15 Programmed currents ≥ 500mA, VBATT > VSYSMIN (short mode), production tested at 500mA and 3000mA settings, TA = +25°C -4 +4 Programmed currents ≥ 500mA, VBATT > VSYSMIN (short mode), production tested at 500mA and 3000mA settings, TA = 0°C to +85°C -5 +5 Programmed currents ≥ 500mA, VBATT < VSYSMIN (LDO mode), production tested at 800mA -10 +10 TA = +25°C, VBATT > VSYSMIN, programmed for 3.0A 2880 3000 3120 TA = +25°C, VBATT > VSYSMIN, programmed for 0.5A 480 500 520 V % A % mA Low-Battery Prequalification Threshold VPQLB VBATT rising 2.8 2.9 3 V Dead-Battery Prequalification Threshold VPQDB VBATT rising 1.9 2 2.1 V Prequalification Threshold Hysteresis VPQ-H Applies to both VPQLB and VPQDB www.maximintegrated.com 100 mV Maxim Integrated | 16 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL Low-Battery Prequalification Charge Current Program Range IPQLB_RANGE Low-Battery Prequalification Charge Current IPQLB CONDITIONS Default setting = enabled (50mA) Charger Restart Threshold Range 50 50 I_PREQUAL= 01 100 I_PREQUAL = 10 200 IPQDB VRSTRT TYP I_PREQUAL = 00 (default) I_PREQUAL = 11 Dead-Battery Prequalification Charge Current MIN Adjustable, 100, 150, and 200, it can also be disabled Charger Restart Deglitch Time 10mV overdrive, 100ns rise time Topoff Current Program Range Programmable from 100mA to 350mA in 8 steps Topoff Current Accuracy - Gain (Note 1) Topoff Current Accuracy - Offset (Note 1) MAX UNITS 400 mA mA 300 400 500 40 55 80 mA 100 150 200 mV 130 100 ms 350 mA Gain 5 % Offset 20 mA Charge Termination Deglitch Time tTERM 2mV overdrive, 100ns rise/fall time 30 ms Charger State Change Interrupt Deglitch Time tSCIDG Excludes transition to timer fault state, watchdog timer state 30 ms Charger Soft-Start Time tSS (Note 1) 1.5 ms IBATT = 10mA 30 IBATT = 1A 60 Load regulation during the reverse regulation mode 30 BATT TO SYS FET DRIVER BATT to SYS Reverse Regulation Voltage VBSREG MINSYS Voltage Accuracy VSYSMIN Programmable from 3.4V to 3.7V in 100mV steps, VBATT = 2.8V, tested at 3.4V, 3.6V, and 3.7V settings The maximum system voltage: VSYSMAX = VBATREG + RBAT2SYS x IBATT Maximum SYS Voltage VSYSMAX -3 mV mV/A +3 4.245 4.32 VBATREG = 4.2V, IBATT = 3.0A The maximum system voltage: VSYSMAX = VBATREG + RBAT2SYS x IBATT % V 4.745 4.82 VBATREG = 4.7V, IBATT = 3.0A www.maximintegrated.com Maxim Integrated | 17 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS WATCHDOG TIMER Watchdog Timer Period tWD 80 Watchdog Timer Accuracy -20 s 0 +20 % CHARGE TIMER Prequalification Time tPQ Applies to both low-battery prequalification and dead-battery prequalification modes 35 min Fast-Charge Constant Current + Fast-Charge Constant Voltage Time tFC Adjustable from 4 hrs to 16 hrs in two hour steps including a disable setting 8 hrs Topoff Time tTO Adjustable from 0 min to 70 min in 10 min steps 30 min Timer Accuracy -20 +20 % AVL FILTER Internal AVL Filter Resistance 12.5 Ω THERMAL FOLDBACK Junction Temperature Thermal Regulation Loop Setpoint Program Range Thermal Regulation Gain TJREG Junction temperature when charge current is reduced, programmable from +85°C to +130°C in +5°C steps, default value is +115°C ATJREG The charge current is decreased 6.7% of the fast-charge current setting for every degree that the junction temperature exceeds the thermal regulation temperature. This slope ensures that the full-scale current of 3.0A is reduced to 0A by the time the junction temperature is +20°C above the programmed loop set point. For lower programmed charge currents such as 500mA, this slope is valid for charge current reductions down to 100mA; below 100mA the slope becomes shallower but the charge current still reduced to 0A if the junction temperature is +20°C above the programmed loop set point 85 130 -150 °C mA/°C BATTERY OVERCURRENT PROTECTION Programmable Battery Overcurrent Threshold Alarm www.maximintegrated.com IBOVCR Overcurrent from BATT to SYS sensed through internal QBAT FET 3 9 A Programmable range from 3A to 9A in 0.5A/step, default to 4.5A Maxim Integrated | 18 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER Battery Overcurrent Debounce Time SYMBOL CONDITIONS tBOVRC This is the response time for generating the overcurrent interrupt flag tBOVRC2 This is the response time from overcurrent interrupt flag to QBAT turn off Battery Overcurrent Protection Quiescent Current IBOVRC System Power-Up Current ISYSPU System Power-Up Voltage VSYSPU VSYS rising, 100mV hysteresis System Power-Up Response Time tSYSPU Time required for circuit to activate from an unpowered state (i.e., main battery hot insertion) MIN TYP MAX 3 6 10 UNITS ms 12 (3 + IBATT)/2 2000 μA 35 50 80 mA 1.9 2.1 2.2 V 1 μs BATT Self-Discharge Resistor 600 Ω SYS Self-Discharge Resistor 600 Ω Self-Discharge Latch Time 300 ms 0.8 x VIO V SYSTEM SELF-DISCHARGE WITH NO POWER DETBATB, INOKB DETBATB Logic Threshold Logic Input Leakage Current VIH 4% Hysteresis IDETBATB Output Low Leakage (INOKB) 0.1 ISINK = 1mA VSYS = 5.5V, TA = +25°C Output High Leakage (INOKB) -1 VSYS = 5.5V, TA = +85°C 0 1 µA 0.4 V +1 0.1 µA THERMISTOR MONITOR (The thresholds are calculated for R25 = 10kΩ and β = 3435k) T1: THM Threshold, Cold, No Charge (0°C) T1 VTHM/VSYS rising, 2% hysteresis (thermistor temperature falling), default OTP option 71.68 74.18 76.68 % T1: THM Threshold, Cold, No Charge (-7°C) T1 VTHM/VSYS rising, 2% hysteresis (thermistor temperature falling), OTP programmable for -7°C (Note 1) 77.51 80.01 82.51 % THM Leakage Current VTHM = VSYS or 0V, TA = +25°C -0.2 0.01 +0.2 µA T4: THM Threshold, Hot, No Charge (+60°C) VTHM/VSYS falling, 2% hysteresis (thermistor temperature rising) 20.44 22.94 25.44 % www.maximintegrated.com T4 Maxim Integrated | 19 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.4 V OVPDRV INPUT FET OVPENB Logic Output Low Threshold VOL,OVPENB ISINK = 200µA, VOVPENB = GND OVPENB Logic Output High Threshold VOH,OVPENB ISOURCE = 200µA, VOVPENB = VAVL = VBATT = 3.6V 0.7 x VAVL V CHARGER INDICATOR (GPIO) Output Low Voltage ISINK = 10mA VSYS = 5.5V; TA = +25°C Output High Leakage 0.4 -1 VSYS = 5.5V; TA = +85°C 0 +1 0.1 V µA ONKEY ONKEY Input Leakage Current ONKEY IL ONKEY Rising Threshold VONKEYR ONKEY Falling Threshold VONKEYF ONKEY Debounce Timer ONKEY TDEB 0V < VONKEY < 5.5V, TA = +25°C -1 +1 0.3 x VBAT V 0.7 x VBAT From ONKEY press to buck-on and QBAT switch ON µA 800 V msecs MASTER-SLAVE CHARGING SWI Output High Voltage VOH ISINK = 100µA SWI Output Low Voltage VOL ISOURCE = 100µA SWI Rising Time TR (Note 1) 200 ns SWI Falling Time TF (Note 1) 200 ns SWI Input Frequency VSYS 0.4 V 0.4 V FSWI Inferred to scan test 250 kHz SWI Turn-On Detection Time Twait_int Inferred to scan test 200 μs SWI Turn-Off Detection Time Toff_dly Inferred to scan test 50 SWI High Time TsH Inferred to scan test 5 SWI Low Time TsL Inferred to scan test 5 Tstop Inferred to scan test 100 SWI Signal Stop Indicate Time SWI Interrupt Trigger Current ISWI_FAULT TA = +25°C SLAVE Input Low Level VIL VSYS = 3.6V; TA = +25°C SLAVE Input High Level VIH VSYS = 3.6V; TA = +25°C www.maximintegrated.com 0.7 x VSYS 90 μs 8 12 μs 8 12 μs μs 200 µA 0.3 x VSYS V V Maxim Integrated | 20 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—Charger (continued) (VCHGIN = 5V, VBATT = 4.2V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Fast-charge current is set for 1.5A. Done current is set for 150mA. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS SLAVE Input Hysteresis VIHYS VSYS = 3.6V; TA = +25°C SLAVE Input Leakage Current ISLAVE TA = +25°C MIN TYP MAX 0.05 x VSYS -1 0 UNITS V +1 µA Electrical Characteristics—SAFEOUT LDO (VCHGIN = 5V, VBATT = 3.8V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL Output Voltage (Default ON) CONDITIONS 5.0V < VCHGIN < 5.5V, IOUT = 10mA, SAFEOUT = 01 (default) Output Voltage PSRR (Note 1) MIN TYP MAX UNITS 4.65 4.9 5.15 V SAFEOUT = 00 4.85 SAFEOUT = 10 4.95 SAFEOUT = 11 3.3 VCHGIN = 5.5, F = 100kHz, COUT = 1μF 60 Maximum Output Current V dB 60 Output Current Limit mA 150 mA Dropout Voltage VCHGIN = 5V, IOUT = 60mA 120 mV Load Regulation VCHGIN = 5.5V, 30µA < IOUT < 30mA 50 mV Quiescent Supply Current Not production tested 72 µA Output Capacitor for Stable Operation (Note1) 0µA < IOUT < 30mA, MAX ESR = 50mΩ 1 µF Minimum Output Capacitor for Stable Operation (Note 1) 0µA < IOUT < 30mA, MAX ESR = 50mΩ 0.7 µF 1200 Ω 0.7 Internal Off-Discharge Resistance Electrical Characteristics—SAR ADC (VCHGIN = 5V, VBATT = 3.6V, VSYS = 3.6V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER CSP Input Leakage Current www.maximintegrated.com SYMBOL ICSP CONDITIONS TA = +25°C MIN TYP MAX UNITS -1 0 +1 µA Maxim Integrated | 21 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—SAR ADC (continued) (VCHGIN = 5V, VBATT = 3.6V, VSYS = 3.6V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER CSN Input Leakage Current ADC Resolution VBUS Voltage Range VBUS Voltage Measurement Accuracy VBUS Voltage Range VBUS Voltage Measurement Accuracy VBUS Current Range VBUS Current Measurement Accuracy VBATT Voltage Range VBATT Voltage Measurement Accuracy VBATT Current Range VBATT Current Measurement Accuracy IREXT Current Range IREXT Current Measurement Accuracy Temperature Sensing Range SYMBOL MIN TYP MAX UNITS TA = +25°C -1 0 +1 µA VBUS_RANGE VBUS_HV_RANGE = 0 2.7 VBUS_RES VBUS_HV_RANGE = 0 VBUS_RANGE VBUS_HV_RANGE = 1 VBUS_RES VBUS_HV_RANGE = 1 ICSN CONDITIONS RES 8 IVBUS_RANGE 14 6.3 VBATT_RES IVBATT_RES 3.1 -10 IREXT_RES In terms of (THMB/THMV) +10 Temperature Sensing Measurement Accuracy TEMP_RES In terms of (THMB/THMV) THMB Output Drive VOH_THMB IOH_THMB = -0.5mA THMB Precharge Time tPRE_THMB THMB Operating Range VTHMB 20 A mA 80 0.24 % % VSYS 0.1 V 12.7 2.8 THMB = 5V A mA 78 TEMP_RANG E V mV 12 IREXT_RANGE IIN_THMV 4.9 0 E A mA 11 IVBATT_RANG IIN_THMB 4.1 2.1 V mV 16 VBATT_RANGE THMV Input Leakage 14.7 0 V mV 33 IVBUS_RES THMB Input Leakage Bits 6.3 ms VSYS V -1 0 +1 µA -1 0 +1 µA Electrical Characteristics—USB Type-C (VCHGIN = 5V, VBATT = 3.8V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL VSYS Voltage VSYS VBUS Voltage VBUS www.maximintegrated.com CONDITIONS MIN TYP 2.45 5 MAX UNITS 5.5 V 20 V Maxim Integrated | 22 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—USB Type-C (continued) (VCHGIN = 5V, VBATT = 3.8V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER VCCINT Voltage SYMBOL VCCINT CONDITIONS MIN TYP MAX VBUS present 3.6 5.5 No VBUS 2.45 5.5 UNITS V VREF Voltage VREF 1.24375 1.25 1.25625 V Oscillator Frequency FOSC 44 50 56 kHz COMN1/COMP2 Load Resistor RUSB Load resistor on COMN1/COMP2 3 6.1 12 MΩ IDCD Supply Voltage Range VDCD IDCD enabled and 300kΩ load on DP 4.5 V 2 pF 4.5 V 3.6 All internal resources disconnected—idle state DP/DN Capacitance DP/DN Max Operating Voltage VDPDNMAX OVDX Comparator Rising Threshold VOVDX_THR Rising COMN1/COMP2 threshold with respect to VCC1 0 120 mV OVDX Comparator Falling Threshold VOVDX_THF Falling COMN1/COMP2 threshold with respect to VCC1 -40 +80 mV Accurate over ILOAD = 0 to 200µA 0.5 0.6 0.7 V Accurate over ILOAD = 0 to 200µA 0.5 0.6 0.7 V Tested at zero load and at 200µA load 2.6 3.4 V VDP_SRC Voltage VDN_SRC Voltage VD33 Voltage VDAT_REF Voltage VLGC Voltage IDM_SINK Current IDP_SRC Current RDM_DWN Resistor VDP_SRC/VSR C06 VDN_SRC/VSR C06 VDP/DM_3p3 VSRC/VSRC33 VDAT_REF 0.25 0.32 0.4 V VLGC 1.62 1.7 1.9 V Accurate over 0.15V to 3.6V 55 80 105 µA Accurate over 0V to 2.5V 7 10 13 µA 14.25 20 24 kΩ 0.01 0.1 0.5 µA IDM_SINK/IDAT SINK IDP_SRC/IDCD RDM_DWN/RD WN15 IWEAK Current IWEAK VBUS31 Threshold VBUS31 DP and DN pins, threshold in percent of VBUS voltage 3V < VBUS < 5.5V 26 31 36 % VBUS47 Threshold VBUS47 DP and DN pins, threshold in percent of VBUS voltage 3V < VBUS < 5.5V 43.3 47 51.7 % VBUS64 Threshold VBUS64 DP and DN pins, threshold in percent of VBUS voltage 3V < VBUS < 5.5V 57 64 71 % Charger Detection Debounce tCDDeb 45 50 55 ms tPDSDWait 27 35 39 ms Primary to Secondary Timer www.maximintegrated.com Maxim Integrated | 23 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—USB Type-C (continued) (VCHGIN = 5V, VBATT = 3.8V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Proprietary Charger Debounce tPRDeb 5 7.5 10 ms Data Contact Detect Timeout tDCDtmo 700 800 900 ms BC 1.2 State Timeout tTMO 180 200 220 ms tOVDxDeb 90 100 110 µs DP/DN Overvoltage Debounce VBUS Supply Current Consumption 12V IVBUS Note: Min may need to be adjusted by resistance of VCONN internal switch at 1W load, for VCONNIN Min > 4.9V VCONN Source Requirements VCONN Bulk Capacitance VSYS = 0V, VBUS = 12V, CC1/CC2 open, CC detection enabled, CCDRPPhase = 00b CVCONN Must be on VCONN source 185 µA 4.75 5.5 V 10 220 µF 5.5 V CC Pin Operational Voltage Range CC Pin Voltage in DFP 3.0A Mode VCC_PIN Measured at CC pins with 126kΩ load, IDFP3.0_CC enable, and VCCINT ≥ 3.65V 3.1 V CC Pin voltage in DFP 1.5A Mode VCC_PIN Measured at CC pins with 126kΩ load, IDFP1.5_CC enable, and VCCINT ≥ 2.45V 1.85 V CC Pin Clamp Requirements 60µA ≤ ICC_ ≤ 600µA 1.1 1.32 V -10% 5.1K +10% Ω CC UFP Pulldown Resistance RDUFP_CC_ CC DFP 0.5A Current Source IDFP0.5_CC_ 0.25V ≤ CC pin voltage ≤ 1.5V -10% 80 +10% µA CC DFP 1.5A Current Source IDFP1.5_CC_ 0.45V ≤ CC pin voltage ≤ 1.5V -8% 180 +8% µA CC DFP 3.0A Current Source IDFP3.0_CC_ 0.85V ≤ CC pin voltage ≤ 2.45V -8% 330 +8% µA CC RA RD Threshold VRA_RD0.5 0.15 0.2 0.25 V CC RA RD Hysteresis VRA_RD0.5_H 0.0 0.03 V CC UFP 0.5A RD Threshold VUFP_RD0.5 0.61 0.7 V CC UFP 0.5A RD Hysteresis VUFP_RD0.5_H 0.0 0.03 V CC UFP 1.5A RD Threshold VUFP_RD1.5 1.16 1.31 V CC UFP 1.5A RD Hysteresis VUFP_RD1.5_H 0.0 0.03 V www.maximintegrated.com 0.66 1.23 Maxim Integrated | 24 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—USB Type-C (continued) (VCHGIN = 5V, VBATT = 3.8V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER CC VCONN Detect Threshold CC VCONN Detect Hysteresis CC DFP VOPEN Detect Threshold SYMBOL VVCONN_DET MIN TYP MAX UNITS 2.10 2.25 2.4 V VVCONN_DET 0.015 _H VDFP_VOPEN CC DFP VOPEN Detect Hysteresis VDFP_VOPEN_ CC DFP VOPEN with 3.0A Detect Threshold VDFP_VOPEN3 CC DFP VOPEN with 3.0A Detect Hysteresis VDFP_VOPEN3 VBUS Valid CONDITIONS 1.50 A_H VBDET VCCINT ≥ 3.5V 2.45 VCCINT ≥ 3.5V 0.0 Rising 3.8 2.6 4.12 VBDET_h Falling hysteresis VBUS Discharge Value Threshold VSAFE0V Falling voltage level where a connected UFP finds VBUS removed VBUS Discharge Value Hysteresis VSAFE0V_h Rising hysteresis CC Pin Power-Up Time tClampSwap Max time allowed from removal of voltage clamp till 5.1k resistor attached Type-C CC Pin Detection Debounce tCCDebounce Type-C Debounce tPDDebounce 10 Type-C Quick Debounce tQDebounce 0.9 1 VBUS Debounce 1.65 0.015 H A 1.575 V V 2.75 V 0.03 V 4.4 0.7 0.6 0.77 0.82 100 100 V V V mV 15 ms 200 ms 20 ms 1.1 ms tVBDeb 9 10 11 ms VSAFE0V Debounce tVSAFE0VDeb 9 10 11 ms Type-C Error Recovery Delay tErrorRecovery 25 tDRP 50 100 ms 30 70 % Time a role swap from DFP to UFP or reverse is completed 1 ms Type-C DRP Toggle Time Duty Cycle of DRP Swap Duty cycle of swap of UFP to DFP roles ms DRP Transition Time tDRPTransition VCONN Enable Time tVCONNON Time from when VBUS is supplied in DFP mode in state Attach.DFP.DRPWait 2 ms VCONN Disable Time tVCONNOFF Time from UFP detached or as directed by I2C command until VCONN is removed 35 ms tSINKADJ Time from CC pin changes state in UFP mode till current drawn from DFP reaches new value 60 ms CC Pin Current Change Time www.maximintegrated.com Maxim Integrated | 25 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Electrical Characteristics—USB Type-C (continued) (VCHGIN = 5V, VBATT = 3.8V, TA = -40°C to +85°C unless otherwise specified, typical values are for TA = +25°C. Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Typical values are not guaranteed.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VBUS On time tVBUSON Time from UFP is attached till VBUS on, for reference only 275 ms VBUS Off Time tVBUSOFF Time from UFP is deteched till VBUS reaches VSAFE0V, for reference only 650 ms BVCEN Output Low Voltage ISINK = 1mA BVCEN Output High Voltage ISOURCE = 1mA 0.4 V VSYS 0.4 V GENERAL VBUS Supply Current Consumption 12V CC Detection Disabled VBUS Supply Current Consumption 5V VBUS Supply Current Consumption 5V CC Detection Disabled SYS Power Supply Current SYS Power Supply Current CC Detection Disabled SYS Power Supply Current 5V SYS Power Supply Current CC Detection Disabled 5V SYS Power Supply Current 3V SYS Power Supply Current CC Detection Disabled 3V VSYS = 0V, VBUS = 12V, CC1/CC2 open, CC detection disabled, CCDRPPhase = 00b 183 µA VSYS = 0V, VBUS = 5V, CC1/CC2 open, CC detection enabled, CCDRPPhase = 00b 131 µA VSYS = 0V, VBUS = 5V, CC1/CC2 open, CC detection disabled, CCDRPPhase = 00b 120 μA VBUS = 0V, VSYS = 4.2V, CC1/CC2 open, CC detection enabled, CCDRPPhase = 00b 45.3 µA VBUS = 0V, VSYS = 4.2V, CC1/CC2 open, CC detection disabled, CCDRPPhase = 00b 7.2 µA Iccsys5v VBUS = 0V, VSYS = 5V, CC1/CC2 open, CC detection enabled, CCDRPPhase = 00b 49 µA Iccsys5v_detdis VBUS = 0V, VSYS = 5V, CC1/CC2 open, CC detection disabled, CCDRPPhase = 00b 10.4 µA Iccsys3v VBUS = 0V, VSYS = 3V, CC1/CC2 open, CC detection enabled, CCDRPPhase = 00b 40.7 µA Iccsys3v_detdis VBUS = 0V, VSYS = 3V, CC1/CC2 open, CC detection disabled, CCDRPPhase = 00b 4 µA IVBUS5V IVBUS5V_detdi s ICCSYS Iccsys4v2_detdi s CC DETECTION VCONN On Resistance CC Pin Clamp Requirements (5.5V) www.maximintegrated.com RVCONN_ON 200mA load, VCONNIN = 4.9V 0.4 0.75 Ω ICC_ ≤ 2mA 5.25 5.5 V Maxim Integrated | 26 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Typical Operating Characteristics (TA = +25 to +50°C, unless otherwise noted.) www.maximintegrated.com Maxim Integrated | 27 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Pin Configuration MAX77860 TOP VIEW (BUMP SIDE DOWN) MAX77860 1 2 3 4 5 6 7 8 9 A GND_A THMB GND_A CC2 VCONNIN CC1 DN DP GND_A B THM ONKEY CSP VCONNBTEN_SYS SLAVE TEST4 TEST3 TEST2 VCCTEST C BATT BATT CSN GND_D SWI1 SWI2 CHGIND GND_Q TEST1 D BATT BATT GND_A GND_A GND_A SYS_Q VBUSDET INTB SYS_A E SYS SYS SYS BAT_SP GND_A INOKB DETBATB VIO SCL F SYS SYS BAT_SN GND_A AVL OVPENB NC1 NC2 SDA G CHGPG CHGRGSUB BST PVL BYP BYP NC3 NC4 NC5 H CHGPG CHGLX CHGLX BYP CHGIN CHGIN NC6 NC7 NC8 J CHGPG CHGLX CHGLX BYP CHGIN CHGIN SAFEOUT GND_D2 GND_A + WLP (81 BUMP 9X9 ARRAY 0.4mm PITCH) N/C PINS ARE UNCONNECTED AND CAN BE CONNECTED AT BOARD-LEVEL IF NEEDED. ALL TEST PINS (TEST 1-4 AND VCCTEST) SHOULD BE GROUNDED IN THE END-USE APPLICATION. *TOP VIEW = WAFER BACK-SIDE VIEW (BUMPS NOT VIEWABLE) www.maximintegrated.com Maxim Integrated | 28 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Pin Description PIN NAME FUNCTION D6 SYS_Q Quiet SYS Input D9 SYS_A Analog SYS Input A1, A3, A9, D3, D4, D5, E5, F4, J9 GND_A Analog Ground. Short to GND_D, GND_D2 and GND_Q. C4 GND_D C8 REF SUPPLY TYPE Power 2 Power GND GND Digital Ground Connection. Short to GND_D2, GND_A, and GND_Q. 1 GND GND_Q Quiet Ground Connection. Short to GND_A, GND_Q, GND_D, and GND_D2. 1 GND J8 GND_D2 Digital Ground Connection. Short to GND_D, GND_A, and GND_Q. E1, E2, E3, F1, F2 SYS System Power Connection. Connect system loads to this node. Bypass with 2 x 10µF/10V ceramic capacitors from SYS to CHGPG ground plane. H5, H6, J5, J6 CHGIN High Current Charger Input. Bypass to CHGPG with a 2.2µF/ 25V ceramic capacitor. It also serves as the reverse boost output. G5, G6, H4, J4 BYP CHGIN Bypass Pin. This pin can see up to OVP limit. Output of adapter input current limit block and input to switching charger. BYP is also the boost converter output when the charger is operating in 'reverse boost' mode. Bypass with 2 x 10µF/25V ceramic capacitors from BYP to CHGPG ground plane. H2, H3, J2, J3 CHGLX G3 BST G1, H1, J1 CHGPG G2 CHGRGSUB GND 5 Power CHGIN Power Charger Switching Node. Connect the inductor between CHGLX and SYS. 4 High-side FET Driver Supply. Bypass BST to CHGLX with a 0.1µF/6.3V ceramic capacitor. 1 Charger Power Ground Connection 2 GND Substrate Charger Ground Connection 1 GND 1 1 F5 AVL Analog Voltage Level. Output of on-chip 5V LDO used to power on-chip, low-noise circuits. Bypass with a 2.2µF/10V ceramic capacitor to GND. Powering external loads from AVL is not recommended, other than pulldown resistors. G4 PVL Internal bias regulator high current output bypass pin. Supports internal noisy and high current gate drive loads. Bypass to PGND with a minimum 10µF/10V ceramic capacitor. C7 CHGIND C1, C2, D1, D2 BATT E4 BAT_SP Battery Positive Differential Sense Connection. Connect to the positive terminal close to the battery. BATT F3 BAT_SN Battery Negative Differential Sense Connection. Connect to the negative or ground terminal close to the battery. BATT www.maximintegrated.com Charging Status Indication GPIO output. Open-drain, option to tie to charger as an active-low output that indicates when the charging is active. Battery Power Connection. Connect to the positive terminal of a single-cell (or parallel cell) Li-ion battery. Bypass BATT to CHGPG ground plane with a 10µF/10V ceramic capacitor. AVL I/O 4 Maxim Integrated | 29 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Pin Description (continued) PIN NAME FUNCTION REF SUPPLY E6 INOKB Charger input valid, active-low logic output flag. Open-drain output indicates when valid voltage is present at both CHGIN and SYS. 1 DETBATB Battery Detection Active-Low Input. Connect this pin to the ID pin on the battery pack. If DETBATB is pulled below 80% of the externally applied VIO voltage, this is an indication that the battery is present and the charger starts when valid CHGIN and/or WCIN power is present. If DETBATB is driven high to VIO voltage or left unconnected, this is an indication that the battery is not present and the charger does not start. DETBATB is pulled high to VIO pin through an off-chip pullup resistor. 1 B2 ONKEY ONKEY is an active-low signal with default 1000ms debounce timer. When no charging source is available at CHGIN, enable DISQIBS bit (DISIBS = 1) with I2C to set the device in ship mode. With a healthy battery, pressing the ONKEY longer than the debounce timer re-enables the QBAT switch and the device exits ship mode. AVL F6 OVPENB Logic-low enable pin enables the external overvoltage protection IC. 1 D7 VBUSDET Input Voltage Detection Pin. This input pin is a voltage clamped version of the input voltage and is used to trigger the device OVLO/UVLO features. Connect a 1µF ceramic capacitor between this pin and CHGPG (ground). 1 B5 SLAVE C5 SWI1 Data Input/Output. Open-drain, 1-wire interface pin for slave 1. C6 SWI2 Data Input/Output. Open-drain, 1-wire interface pin for slave 2. B3 CSP Slave-Charger Sense Current Positive Input. Option to add a 10mΩ sense resistor from CSP to CSN to have current sense information return to the master for processing. If slave charging is unused, short this pin to BATT. C3 CSN Slave-Charger Sense Current Negative Input. Option to add a 10mΩ sense resistor from CSP to CSN to have current sense information return to the master for processing. If slave charging is unused, short this pin to BATT. J7 SAFEOUT E8 F9 E7 Input pin to indicate if slave charger is connected. Short to GND_A—no slave charger connected. Short to SYS_A—slave charger connected. 1 1 Safeout LDO Output. Default 4.9V and on when CHGIN power is valid. Bypass with a 1µF/10V ceramic capacitor to GND. 1 VIO Digital I/O Supply Input for I2C interface 1 SDA I2C Serial Data 1 1 E9 SCL I2C Serial Clock D8 INTB Interrupt Output. Active-low, open-drain output. 1 B1 THM Thermistor Connection. Determine battery temperature using ratiometric measurement. 1 www.maximintegrated.com TYPE Maxim Integrated | 30 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Pin Description (continued) PIN NAME FUNCTION A2 THMB Pullup voltage for THM pin pullup resistor that can be switched to save power. C9 TEST1 Test I/O Pin. Ground this pin in the application. VCCTEST B8 TEST2 Test I/O Pin. Ground this pin in the application. 1 B7 TEST3 Test I/O Pin. Ground this pin in the application. 1 B6 TEST4 Test I/O Pin. Ground this pin in the application. 1 B9 VCCTEST Test Mux Supply. Ground this pin in the application. 1 1 1 A7 DN Common Negative Output 1. Connect to D- on mini/micro USB connector. A8 DP Common Positive Output2. Connect to D+ on mini/micro USB connector. A6 CC1 Type-C CC pin 1, can be connected in parallel with USB power delivery transceiver. A4 CC2 Type-C CC pin 2, can be connected in parallel with USB power delivery transceiver. A5 VCONNIN B4 VCONNBTEN_S F7, F8, G7, G8, G9, H7, H8, H9 YS NC1–NC8 www.maximintegrated.com REF SUPPLY TYPE 1 5V power supply for supplying power to the unused CC pin if required. Output pin, used to enable external VCONN boost. No connection. Connect to GND. Maxim Integrated | 31 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Functional Diagrams Functional Block Diagram MAX77860 4 OUT CHGIN BYP 2.2µF/25V OVP (OPTIONAL) OVPENB VBUSDET AVL 2.2µF /10V VSYS DN DP PVL 10µF /10V ISENSE AND OTG SWITCH, COMPARATOR 0.47µH CHGRGSUB CHGIND GND 2.2kΩ 2.2kΩ 200kΩ VIO INTB MECH SWITCH ONKEY I²C SERIAL PORT AND REGISTERS AND CONTROL 3.15A SWITCHING CHARGER AND REVERSE BOOST THM THMB DETBATB SAFEOUT LDO SYS_A 4 VCCTEST TEST_ CC1 CC2 10kΩ TEST DN DP 4 10µF/10V BAT_SP BAT_SN SAFEOUT AP VIO BATT SW1 SW2 1µF/10V VSYS 2 X 10µF/10V CHGPG 3 5 SYS REVERSE BLOCKING SDA SCL AP USB TYPE-C CC/ADAPTOR DETECTION GND_A www.maximintegrated.com 0.1µF/6.3V CHGLX INOKB VSYS 470Ω 0.1µF/ 6.3V 2 X 10µF/25V BST CC1 CC2 4 RID 0.1µF /50V IN 200kΩ USB-C CONNECTOR VBUS 9 GND_Q CSP MASTER/SLAVE, EXT. SENSE, CONTROL GND_D NC OPTIONAL CHARGER CSN 8 Maxim Integrated | 32 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Detailed Description Switching Charger The MAX77860 includes a full featured switch-mode charger for a one-cell lithium ion (Li+) or lithium polymer (Li-polymer) battery. The current limit for CHGIN input is independently programmable from 0 to 4.0A in 33.3mA steps allowing the flexibility for connection to either an AC-to-DC wall charger or a USB port. The CHGIN input current limit default is set between 100mA and 500mA (programmed default). It also integrates a charging source detector based on signatures from USB D+/D- lines with a USB Type-C connector CC pin detector. The USB data lines are probed using a USB Battery Charging Specification revision 1.2 compliant scheme and additional proprietary charger type detection. Type-C detector supports USB Type-C DRP (dual role port) and other applications. The synchronous switch-mode DC-DC converter can operate at either 2MHz or 4MHz switching frequency, which is ideal for portable devices due to the flexibility of using small components while eliminating excessive heat generation. The DCDC converter can be operated in either buck or reverse-boost mode. When charging the battery, the DC-DC converter operates as a buck converter. In this mode, it operates from 3.2V to 14V input source and provides up to 3.15A charging current (programmable) to the battery. When operating in reverse-boost mode, the DC-DC converter uses energy from the main battery to boost the voltage at BYP. The boosted BYP voltage can then be used for the USB OTG function. The IC makes the best use of the limited adapter power and the battery’s power at all times to supply up to 3.15A continuous (4A peak) current from the buck to the system. Additionally, supplement mode provides additional current from the battery to the system up to 4.5ARMS, and the BATT to SYS switch has overcurrent protection (see the MainBattery Overcurrent Protection section for more information). Adapter power that is not used for the system goes to charge the battery. Maxim’s proprietary process technology allows for low-RDS(ON) devices in a small solution size. The total dropout resistance from adapter power input to the battery is 0.15Ω (typ) assuming that the inductor has 0.04Ω of ESR. This 0.15Ω typical dropout resistance allows for charging a battery up to 3.15A from a 5V supply. Safety features ensure reliable charging, such as charge timer, watchdog, junction thermal regulation, over/under voltage protection, short circuit protection, etc., are also implemented on the IC. Features ● Single-Cell Switch-Mode Battery Charger • Adapter/USB Input • Up to 14V Adapter Charging (The OVLO level of the external input switch connected to CHGIN should be set lower than MAX77860 OVLO.) • Up to 4.0A Input Current Limit (programmable) ● Battery Charge Current (up to 3.15A) • CC, CV, and Die Temperature Control • Support for External Battery Disconnect FET • Support for Battery Discharge Overcurrent protection up to 6ARMS (programmable) ● Reverse Boost Capability • Supports USB-OTG Accessories • Up to 5.1V/2A • Programmable OCP Threshold ● Support for USB Battery Charger rev 1.2 Detection • Data Contact Detection (DCD) • Detects all USB defined sources • Standard USB Port • Charging Downstream Port www.maximintegrated.com Maxim Integrated | 33 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC • Dedicated Charging Port • Adapter Type Detection • Manual Restart of Charger Detection ● Support USB Type-C (rev 1.1) Including: • USB Type-C • Integrated VCONN Switch • CC Pin • Supports 20V Pull (through 10k min external resistor) Source Requirement • Dead Battery Clamp Allowing for Unpowered Upstream Facing Port (UFP) Identification ● Single Safeout LDO ● I2C Serial Interface USB Data Contact Detection The USB plugs are designed so that when the plug is inserted into the receptacle, the power pins make contact before the data pins. The result is that VCHGIN makes contact before the data pins make contact. To ensure that the data pins have made contact, BC 1.2 makes it optional to detect when the data pins have made contact. To detect when the data pins have made contact, the data pins are prebiased so at least one of the data pins changes state. Therefore, when a change in data pin state is detected, the charger proceeds to identify the type of attached port. DP and DN The internal USB full speed/low speed transceiver is brought out to the bi-directional data pins DP and DN. These pins are ESD protected up to ±15kV. Connect these pins to a USB “B”/costume connector through external 20Ω series resistors. The IC provides an automatic switchable 1.5kΩ pullup resistor for D- (low speed) and D+ (high speed). Adapter Detection When an adapter is present on the VCHGIN, the IC examines the device that is inserted to identify the type of adapter. The possible adapter types are: • Dedicated charger • Non-compliant dedicated chargers • Charger downstream port (host or hub) • USB 2.0 (host or hub) low power • USB 2.0 (host or hub) high power Each of these devices have different current capabilities as shown in Table 1. Table 1. Supported Adapter Types ADAPTER TYPE Dedicated Charger Charger Downstream Port OUTPUT VOLTAGE OUTPUT CURRENT 4.75V to 5.25V at Iload < 500mA 2.0V to 5.25V at Iload ≥ 500mA 500mA to Imax 4.75V to 5.25V at Iload < 500mA 500mA to 900mA for low-speed and full-speed 2.0V to 5.25V at Iload ≥ 500mA 500mA to 1.5A for low-speed and full-speed Apple 500mA 4.75V to 5.25V at Iload < 500mA 500mA maximum Apple 1A 4.75V to 5.25V at Iload < 1A 1A maximum Apple 2A 4.75V to 5.25V at Iload < 2A 2A maximum Apple 12W 4.75V to 5.25V at Iload < 2.4A 2.4A maximum Samsung 2A 4.75V to 5.25V at Iload < 2A 2A maximum USB 2.0 Low Power 4.25V to 5.25V 100mA maximum www.maximintegrated.com Maxim Integrated | 34 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Table 1. Supported Adapter Types (continued) USB 2.0 High Power 4.75V to 5.25V 500mA maximum Charging Status Indicator The IC has a charging status indicator to notify the user of various charging states as shown in Figure 1. LEDEN VPQUTH LEDEN CHGIND BLOCK Figure 1. Charging Status Indicator Dead Battery State When the battery is dead and below prequal threshold, LED0 is set up to blink with 50ms ON time in 1s period. LEDEN bit is enabled by default. Prequal Battery State When the battery is dead and below prequal threshold, LED0 is set up to blink with 50ms ON time in 1s period. The LEDEN bit is enabled by default. Fast-Charge Battery State When the battery is in fast-charge state, CHGIND LED is set up to be enabled 100%. The LEDEN bit can be programmed to disable, but is enabled by default. Fast-Charge Constant Voltage State When the battery is in fast-charge state, CHGIND LED is set up to be enabled 100%. The LEDEN bit can be programmed to disable, but is enabled by default. Topoff State When the battery is in topoff-charge state, CHGIND LED is set up to blink with 50% ON time in 1s. The LEDEN bit can be programmed to disable, but is enabled by default. Done State When the battery is in done-charge state, CHGIND LED is set up to be disabled. External Input OVP Driver The driving circuit of external OVP on the input side is taken from the IC charger. The use of this feature is as follows: ● Blocking FET from input transient voltage during USB insertion/removal event. ● The polarity of the driving signal logic can be OTP programmable. Input Current Limit The default settings of the CHGIN_ILIM and MODE control bits are such that when a charge source is applied to CHGIN, the IC turns its DC-DC converter on in BUCK mode, limits VSYS to VBATREG, and limits the charge source current to 500mA. All control bits are reset on global shutdown. www.maximintegrated.com Maxim Integrated | 35 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Input-Voltage Regulation Loop and Adaptive Input Current Limit (AICL) An input-voltage regulation loop ensures proper charger operation even when it is attached to power sources with poor transient load responses. The loop improves performance with relatively high resistance charge sources that exist when long cables are used or devices are charged with noncompliant USB hub configurations. Additionally, this input-voltage regulation loop improves performance with current limited adapters. If the ICs input current limit is programmed above the current limit threshold of given adapter, the input voltage loop allows the IC to regulate at the current limit of the adapter. Finally, the input-voltage regulation loop allows the IC to perform well with adapters that have poor transient load response times. The input-voltage regulation loop automatically reduces the input current limit in order to keep the input voltage at VCHGIN_REG. If the input current limit is reduced to ICHGIN_REG_OFF (50mA, typ) and the input voltage is below VCHGIN_REG, then the charger input is turned off. The input-voltage regulation loop automatically reduces the input current limit to keep the input voltage at VCHGIN_REG (programmable). If the input current limit is reduced to ICHGIN_REG_OFF (50mA, typ) and the input voltage is below VCHGIN_REG, then the charger input is turned off. After operating with the input-voltage regulation active, a BYP_I interrupt is generated, BYP_OK is cleared, and BYP_DTLS = 0b1xxx. To optimize input power when working with a current limited charge source, monitor the BYP_DTLS while decreasing the input current limit. When the input current limit is set below the limit of the adapter, the input voltage rises. Although the input current limit is lowered, more power can be extracted from the input source when the input voltage is allowed to rise. For example, optimum use of input-voltage regulation with an adapter programmed to 0.5A current limit and having a cable resistance between 300mΩ and 3Ω. Battery Detect Input Pin (MDETBATB) DETBATB is tied to the ID pin of the battery pack. If DETBATB is pulled below 80% of VIO pin voltage, this is an indication that the main battery is present and the battery charger starts upon valid CHGIN. If DETBATB is left unconnected or equal to VIO voltage, this indicates that the battery is not present and the charger does not start upon valid CHGIN, see Figure 4. DETBATB is internally pulled to BATT through an external resistor. The DETBATB status bit is valid when BATT is not present. VCC MAX77860 VIO 2R RBIAS 8R ID DETBATB GND VCC SYSTEM IC ADC RP BATTERY PACK GND Figure 2. DETBATB Internal Circuitry and System Diagram www.maximintegrated.com Maxim Integrated | 36 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Charge States The IC utilizes several charging states to safely and quickly charge batteries as shown in Figure 3. An exaggerated view of a Li+/Li-Poly battery is shown in Figure 4 when there is no system load and the die and battery are close to room temperature as it progresses through the following charge states: 1. 2. 3. 4. Prequalification Fast-charge Topoff Done NO INPUT POWER or CHARGER DISABLED CHG_DTLS = 0x08 CHG_OK = 1 ICHG = 0 CHG Timer = 0 WD Timer = 0 MODE[3:0] PROGRAMED THE CHARGER TO BE OFF ANY STATE except thermal shutdown CHGIN is INVALID CHGIN is VALID and MODE PROGRAMMED FOR CHARGER ENABLED (CHG Timer = Resume WD Timer = Resume) WATCHDOG Suspend CHG_DTLS = 0x0B CHG_OK = 0 ICHG = 0 WD Timer > tWD (CHG Timer = Suspend, only if WDTEN = 1) TJ < TSHDN (CHG Timer = Suspend WD Timer = Suspend) Thermal Shutdown CHG_DTLS = 0x0A CHG_OK = 0 ICHG = 0 DEAD-BATTERY PREQUALIFICATION CHG_DTLS = 0x00 CHG_OK = 1 ICHG < = IPQDB WDTCLR[1:0] = 0b10 (WD Timer = 0 & Resume CHG Timer = Resume) TJ > TSHDN (CHG Timer = 0 WD Timer = 0) From: any prequal state, any fast charge state, top-off, done or timer fault. Returns To: the same state that it came from. G CH VMBATT > VPQDB (Soft Start) er Tim VMBATT < VPQDB (Soft Start) Q > tP LOW-BATTERY PREQUALIFICATION CHG_DTLS = 0x00 CHG_OK = 1 If PQEN = 1, then ICHG < = IPQLB If PQEN = 0, then ICHG < = IFC VMBATT < VPQLB (CHG Timer = 0) CHG VMBATT < (VBATREGVRSTRT) (No Soft Start, CHG Timer = Resume) VMB A VRS TT < (VBATR TR EG (No S T ) CHG oft Start, Time r=R esum e) r>t VMBATT > VPQLB (Soft Start, CHG Timer = 0) FAST CHARGE (CC) CHG_DTLS = 0x01 CHG_OK = 1 ICHG < = IFC VMBATT < VBATREG Time PQ TIMER FAULT CHG_DTLS = 0x06 CHG_OK = 0 IBAT = 0 CHG Timer > tFC VMBATT = VBATREG for 56ms CHG Timer > tFC FAST CHARGE (CV) CHG_DTLS = 0x02 CHG_OK = 1 ICHG < = IFC and ICHG > ITO IMBATT < ITO for tTERM (CHG Timer = 0 & Suspend) TOP OFF CHG_DTLS[3:0] = 0x03 CHG_OK = 1 ICHG < = IFC SWI1 or SWI2 = 1 YES NO DONE CHG_DTLS = 0x04 CHG_OK = 1 ICHG = 0 If (1) SWI1 = SWI2 = high: turn off the slave charger which has lower charging current setting (2) SWI1 = high, SWI2 = low: turn off Slave #1 (3) SWI1 = low, SWI2 = high: turn off Slave #2 (4) SWI1 = SWI2 = low, do nothing CHG Timer > tTO Figure 3. Charger State Diagram www.maximintegrated.com Maxim Integrated | 37 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC DONE CHG_DTLS[3:0] = 0b0100 TOP-OFF CHG_DTLS[3:0] = 0b0011 RESTART FAST CHARGE (CV) CHG_DTLS[3:0] = 0b0010 DONE CHG_DTLS[3:0] = 0b0100 TOP-OFF CHG_DTLS[3:0] = 0b0011 FAST CHARGE (CV) CHG_DTLS[3:0] = 0b0010 FAST CHARGE (CC) CHG_DTLS[3:0] = 0b0001 LOW-BATTERY PREQUALIFICATION CHG_DTLS[3:0] = 0b0000 STATES DEAD-BATTERY PREQUALIFICATION CHG_DTLS[3:0] = 0b0000 NOT TO SCALE, VCHGIN = 5.0V, ISYS = 0A, TJ = 25°C BATTERY VOLTAGE VBATREG VRSTRT NOTE 1 VPQLB VPQDB 0V BATTERY CHARGE CURRENT TIME ICHG ≤ ISET IPQLB IPQDB ITO 0A Charger enabled TIME NOTE 1: A typical Li+/Li-Poly has an internal battery pack protection circuit that opens the battery connection when the battery’s cell voltage is lower than a dead battery threshold (VDB.FALLING~2.5V). To get the pack protection to close again, the charger charges the battery capacitor with IPQDB until the voltage exceeds VPQDB. Then the charger charges the battery capacitor with IPQLB. When the battery capacitor’s voltage exceeds VDB.RISING~2.6V, then the battery pack protection circuit closes which connects the cell to the charger. VDB.FALLING and VDB.RISING are not determined by the charger – they are properties of the battery. Figure 4. Li+/Li-Poly Charge Profile www.maximintegrated.com Maxim Integrated | 38 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC Dead-Battery Prequalification State As shown in Figure 3, the dead-battery prequalification state occurs when the main-battery voltage is less than VPQDB. After being in this state for tSCIDG, a CHG_I interrupt is generated, CHG_OK is set, and CHG_DTLS is set to 0x00. In the dead-battery prequalification state, charge current into the battery is IPQDB. The following events cause the state machine to exit this state: ● Main battery voltage rises above VPQDB and the charger enters the “Low-Battery Prequalification” state. ● If the battery charger remains in this state for longer than tPQ, the charger state machine transitions to the “Timer Fault” state. ● If the watchdog timer is not serviced, the charger state machine transitions to the “Watchdog Suspend” state. Note that the dead-battery prequalification state works with battery voltages down to zero volts. The low zero volt operation typically allows this battery charger to recover batteries that have an “open” internal pack protector. Typically, a packs internal protection circuit opens if the battery has experienced an overcurrent, undervoltage, or overvoltage event. When a battery with an “open” internal pack protector is used with this charger, the low-battery prequalification mode current flows into the 0V battery. This current raises the pack’s terminal voltage to the point where the internal pack protection switch closes. Note that a normal battery typically stays in the low-battery prequalification state for several minutes or less. Therefore, a battery that stays in low-battery prequalification state for longer than tPQ might be experiencing a problem. Fast-Charge Constant Current State As shown in Figure 3, the fast-charge constant current (CC) state occurs when the main-battery voltage is greater than the low-battery prequalification threshold and less than the battery regulation threshold (VPQLB < VBATT < VBATREG). After being in the fast-charge CC state for tSCIDG, a CHG_I interrupt is generated, CHG_OK is set, and CHG_DTLS = 0x01. In the fast-charge CC state, the current into the battery is less than or equal to IFC. Charge current can be less than IFC for any of the following reasons: ● ● ● ● The charger input is in input current limit. The charger input voltage is low. The charger is in thermal foldback. The system load is consuming adapter current. Note that the system load always gets priority over the battery charge current. The following events cause the state machine to exit this state: ● When the main battery voltage rises above VBATREG, the charger enters the "Fast Charge (CV)" state. ● If the battery charger remains in this state for longer than tFC, the charger state machine transitions to the “Timer Fault” state. ● If the watchdog timer is not serviced, the charger state machine transitions to the “Watchdog Suspend” state. The battery charger dissipates the most power in the fast-charge constant current state.This power dissipation causes the internal die temperature to rise. If the die temperature exceeds TREG, IFC is reduced. Topoff State As shown in Figure 3, the topoff state can only be entered from the fast-charge CV state when the charger current decreases below ITO for tTERM. After being in the topoff state for tSCIDG, a CHG_I interrupt is generated, CHG_OK is set, and CHG_DTLS = 0x03. In the topoff state, the battery charger tries to maintain VBATREG across the battery and typically the charge current is less than or equal to ITO. The smart power selector control circuitry may reduce the charge current lower than the battery may otherwise consume for any of the following reasons: ● The charger input is in input current limit. ● The charger input voltage is low. www.maximintegrated.com Maxim Integrated | 39 MAX77860 USB Type-C, 3A Switch-Mode Buck Charger with Integrated CC Detection, Reverse Boost, and ADC ● The charger is in thermal foldback. ● The system load is consuming adapter current. Note that the system load always gets priority over the battery charge current. The following events cause the state machine to exit this state: ● After being in this state for the topoff time (tTO), the charger enters the "Done" state. ● If VBATT < VBATREG – VRSTRT, the charger goes back to the “Fast-Charge (CC)” state. ● If the watchdog timer is not serviced, the charger state machine transitions to the “Watchdog Suspend” state. Done State As shown in Figure 3, the battery charger enters its done state after the charger has been in the topoff state for tTO. After being in this state for tSCIDG, a CHG_I interrupt is generated, CHG_OK is cleared, and CHG_DTLS = 0x04. The following events cause the state machine to exit this state: ● If VBATT < VBATREG – VRSTRT, the charger goes back to the “Fast-Charge (CC)” state. ● If the watchdog timer is not serviced, the charger state machine transitions to the “Watchdog Suspend” state. In the done state, the charge current into the battery (ICHG) is 0A. In the done state, the charger presents a very low load (IMBDN) to the battery. If the system load presented to the battery is low (
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