MP2637GR-P

MP2637 The Future of Analog IC Technology 2.5A Single Cell Switch Mode Battery Charger with Power Path Management (PPM) and 2.4A Boost Current with Trickle Timer DESCRIPTION FEATURES The MP2637 is a highly-integrated, flexible, switch-mode battery charger with system power path management, designed for single-cell Liion or Li-Polymer batteries used in a wide range of applications.    The MP2637 can operate in both charge mode and boost mode to allow full system and battery power management. When input power is present, the device operates in charge mode. It automatically detects the battery voltage and charges the battery in three phases: trickle current, constant current and constant voltage. Other features include charge termination and auto-recharge. This device also integrates both input current limit and input voltage regulation in order to manage input power and meet the priority of the system power demand. In the absence of an input source, the MP2637 switches to boost mode through the MODE pin to power the SYS pins from the battery. The OLIM pin programs the output current limit in boost mode. The MP2637 also allows for output short circuit protection to completely disconnect the battery from the load in the event of a short circuit fault. Normal operation will recover as soon as the short circuit fault is removed. The MP2637 provides full operating status indication to distinguish charge mode from boost mode. To guarantee safe operation, the MP2637 limits the die temperature to a preset value of 120oC. Other safety features include input over-voltage protection, battery over-voltage protection, thermal shutdown, battery temperature monitoring, and a programmable timer to prevent prolonged charging of a dead battery. MP2637 Rev. 1.05 11/6/2020             Up to 16V Sustainable Input Voltage 4.5V-to-6V Operating Input Voltage Range Power Management function, Integrated Input-Current Limit, Input Voltage Regulation Up to 2.5A Programmable Charge Current Trickle-Charge Function Selectable 4.2V/ 4.35V Charge Voltage with 0.5% Accuracy Negative Temperature Coefficient Pin for Battery Temperature Monitoring Programmable Timer Back-Up Protection Thermal Regulation and Thermal Shutdown Internal Battery Reverse Leakage Blocking Integrated Over Voltage Protection and Over Current Protection for Pass-Through Path Reverse Boost Operation Mode for System Power Up to 2.4A Programmable Output Current Limit for Boost Mode Integrated Short Circuit Protection and Output Over Voltage Protection for Boost Mode Safety-Related Certification: o IEC 62368-1 AK Certification APPLICATIONS   Sub-Battery Applications Power-Bank Applications for Smart-Phone Tablet and Other Portable Devices 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. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 1 MP2637 –2.5A SINGLE CELL SW MODE BATTERY CHARGER WITH PPM AND 2.4A BOOST TYPICAL APPLICATION To 5V System R1 R2 ROLIM* CSYS* FB SYS C2 OLIM 5V Input SW RS1 L1* ICHG IBATT VIN R4 CIN Q1 R3 Q2 Q3 REG CBATT CSP Q4 BATT R6 NTC MP2637 ACOK EN BOOST MODE ILIM RILIM Battery Voltage GND: 4.35V Program High/Float: 4.2V CHG VCC C4* VB Battery VSYS PWIN R5 VBATT VCC ISET AGND PGND TMR CTMR RISET *Note: 1. 2. 3. 4. ROLIM CANNOT be lower than 47.5kΩ. ROLIM is for the boost output current loop setting, and please refer to the APPLICATION INFORMATION section for details. CSYS should be put as close to the SYS pin and PGND as possible. At least 22μF is recommended, and CSYS+C2 should not be less than 44μF, the ceramic is preferred and E-cap is not recommended. VCC cap should not exceed 100nF. Recommend 47nF or 100nF. Inductor should not exceed 2.2μH. Recommend 1.5μH or 2.2μH. MP2637 Rev. 1.05 11/6/2020 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 2 MP2637 –2.5A SINGLE CELL SW MODE BATTERY CHARGER WITH PPM AND 2.4A BOOST Table 1: Operation Mode Power Source VIN PWIN VIN> VBATT+300mV 0.8V