MP2625BGL-P

MP2625B 2A Switching Charger with NVDC Power Path Management For Single Cell Li+ Battery The Future of Analog IC Technology DESCRIPTION FEATURES The MP2625B is a monolithic switch mode battery charger with power path management for single-cell Li-ion batteries in a wide range of tablet and other portable devices. It integrates a synchronous BUCK regulator to provide regulated voltage for powering the system output and at the same time charging the battery. This device supports both USB and high power DC adapter input. In USB mode, the input current limit can be programmed to 450mA or 825mA via the logic pins to cover the USB2.0 and USB3.0 specifications. When the adapter input is present, the input current can also be limited in order to avoid overloading of the DC adapter. Input current limit can be programmed up to 2A.    The smart power path management allows MP2625B to regulate the system voltage for powering an external load and charging the battery independently and simultaneously. This allows immediate system operation even under missing or deeply discharged battery. When the input current limit is reached, the system load is satisfied in priority, then the charger will take the remaining current to charge the battery. Additionally, the smart power path control allows an internal connection from battery to the system in order to supplement additional power to the load in the event the system power demand increases over the input limited power or the input is removed. The MP2625B features high integration with all the power switches integrated inside. No external MOSFET, blocking diodes, or current sense resistor is required.             4V to 10V Operating Input Voltage Smart Power Path Management Five Control Loops: Input Current Limit, Input Voltage Limit, Constant Charge Current, Terminal Battery Control and Thermal Fold-Back. 1.6MHz Switching Frequency Programmable Input Current Limit Programmable Charge Current Single Input for USB and AC adapter Cover USB2.0 and USB3.0 Input Specification Fully Integrated Power Switches No External Blocking Diode and Sense Resistor Required Charging Operation Indicator Built-in Programmable Charging Timer Thermal Limiting Regulation on Chip Battery Temperature Monitor Tiny Package Features Small Size APPLICATIONS       Smart Phone E-Book GPS Portable Media Player Portable Hand-held Solution Tablet PC All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. Two status monitor output pins are provided to indicate the battery charge status and power source status. Other features include trickle charge, battery temperature monitoring, timer and thermal limiting regulation on chip. MP2625B is available in QFN 3mmx4mm package. MP2625B Rev. 1.04 www.MonolithicPower.com 4/22/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 1 MP2625B – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL TYPICAL APPLICATION MP2625B Rev. 1.04 www.MonolithicPower.com 4/22/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 2 MP2625B – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL ORDERING INFORMATION Part Number* MP2625BGL Package QFN-20 (3mmx4mm) Top Marking See Below * For Tape & Reel, add suffix –Z (e.g. MP2625BGL–Z); TOP MARKING MP: MPS prefix Y: year code W: week code 2625B: part number LLL: lot number PACKAGE REFERENCE TOP VIEW QFN-20 (3mmx4mm) MP2625B Rev. 1.04 www.MonolithicPower.com 4/22/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 3 MP2625B – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL PIN FUNCTIONS Package Pin # Name 1 BST 3 2,4 5 IN SW PGND 6 EN 7 8 M0 M1 9 _____________ 10 __________ 11 AGND 12 SYSFB 13 14 SYS BATT 15 ISET 16 NTC 17 ILIM 18 19 20 TMR VLIM VCC _____ CHGOK ACOK Description Bootstrap. A capacitor is connected between SW and BST pin to form a floating supply across the power switch driver to drive the power switch’s gate above the supply voltage. Power input of the IC from adapter or USB. Switch output. Power ground. Function logic control pin of the IC. Logic low to enable the part and logic high to disable the part. Mode Select Input Pin, in combination with M1 pin, setting the input current limit mode. Mode Select Input Pin, in combination with M0 pin, setting the input current limit mode. Open drain output. It is pulled low during charging. And it is pulled high through an external resistor to VCC to indicate charge completed. Open drain output. It is pulled low to indicate the presence of a valid input power supply. Otherwise, it is pulled high through an external resistor to VCC to indicate invalid input or removed input. Analog ground. SYS voltage program pin. Connect a resistor divider from the pin to SYS and AGND to program the system output voltage. Leave the pin float to disable the function. DC-DC regulator output to power the system load and charge the battery. Positive battery terminal. Charge current program pin. A resistor from the pin to AGND can program the charge current during CC charge. Float the pin will disable the charge function. Thermistor input. Connect a resistor from this pin to VCC and the thermistor from this pin to ground. The thermistor is usually inside the battery pack. Input current limit program pin. A resistor from the pin to AGND can program the input current limit with adapter input. Set timer out period. Connect TMR pin to AGND to disable the internal timer. Input voltage clamp program pin. Supply voltage of the IC. MP2625B Rev. 1.04 www.MonolithicPower.com 4/22/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 4 MP2625B – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance (4) IN, SW .......................................... -0.3V to +20V BATT, SYS ...................................... -0.3V to +6V BST ............................................... -0.3V to +26V All Other Pins .................................. -0.3V to +6V Continuous Power Dissipation (TA = +25°C) (2) QFN20 3mmx4mm...................................... 2.6W Junction Temperature ............................... 150C Lead Temperature .................................... 260C Storage Temperature.................–65°C to 150°C QFN-20 (3mmx4mm) .............. 48 ....... 11 ... C/W Recommended Operating Conditions (3) Supply Voltage VIN ........................... 4.0V to 10V Operating Junction Temp. (TJ) ....-40°C to +125°C θJA θJC Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX)-TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. MP2625B Rev. 1.04 www.MonolithicPower.com 4/22/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2020 MPS. All Rights Reserved. 5 MP2625B – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL ELECTRICAL CHARACTERISTICS VIN = 5.0V, TA = 25C, unless otherwise noted. Parameters Input Power (IN) IN Operating Range Symbol Condition IN Under Voltage Lockout Threshold IN vs. BATT Threshold BST Voltage Threshold Typ Max Units Rising 4.0 3.65 3.8 10 3.95 V V Falling 3.35 3.5 3.65 V VIN VBST-VSW Rising 240 280 320 mV Falling 40 70 120 mV Rising 2.7 2.9 3.1 V Falling 2.55 2.75 2.95 V 1.4 1.6 1.8 MHz 400 750 1840 450 825 2000 500 900 2160 mA mA mA 1840 2000 2160 mA 1.1 1.14 1.18 V 120 80 130 100 mΩ mΩ 3.0 4.0 5.0 A 1.49 1.52 1.55 V 2.4 5 mA 2.8 5 mA 3.8 5 mA 3.8 5 mA 3 5 uA 0.01 0.2 uA 3.45 3.6 3.75 V 3.5 VBATT+ 0.2V 4.5 V 4.4 V 1.170 V Switching Frequency Input Current Limit Input Current Limit Reference Voltage High-side NMOS On Resistance Low-side NMOS On Resistance High-side NMOS Peak Current limit Input Voltage Clamp Threshold Input Quiescent Current IIN SYS Regulation Voltage USB2.0 Mode USB3.0 Mode Default Mode Programmable Mode, RILIM=23k VILIM RH_DS(ON) Include the BLOCK FET RL_DS(ON) VVLIM IIN SYS to IN reverse current blocking SYS Output Minimum SYS Regulation Voltage VSYS VSYS Voltage on VLIM Charger Enabled, USB2.0 Mode Charger Enabled, USB3.0 Mode Charger Enable, Programmable Mode Charger Enabled, Default Mode Disabled, EN=0V SYS=SW=4.5V,VIN=0V, monitor VIN leakage SYS voltage @ VBATT≤3.4V, SYSFB float 3.4VVBATT–800mV, VBATT=4.2V SYS short BATT to SYS Resistance BATT to SYS Current Limit Min 4 Typ Max Units 0.04 0.05 Ω 5 6 A 230 mA Battery Charger VBATT>VRECH, ICHG≤IBF, SYSFB float Terminal Battery Voltage Recharge Threshold at VBATT Recharge Hysteresis Trickle Charge Threshold Trickle Charger Hysteresis Trickle Charge Current Termination Charger Current VBATT VRECH 4.168 VSYS