EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX77962 23V 3.2A USB-C Buck-Boost Charger with IN OUT Integrated FETs for 2S Li-Ion Batteries General Description Benefits and Features The MAX77962 is a high-performance wide-input 3.2A 3.5V to 23V Input Operating Range, 30V Withstand DC buck-boost charger with a Smart Power Selector and Voltage operates as a reverse buck without an additional inductor, 97% Peak Efficiency at 9V /7.4V /1.5A IN OUT OUT allowing the IC to power USB On-the-Go (OTG) acces- Reverse Leakage Protection sories. The device integrates low-loss power switches, 50mA to 3.15A Programmable Input Current Limit and provides small solution size, high efficiency, low heat, 50mA to 3.2A Programmable Constant Current and fast battery charging. The reverse buck has true-load Charge disconnect and is protected by an adjustable output cur- Remote Differential Voltage Sensing rent limit. The device is highly flexible and programmable 600kHz or 1.2MHz Switching Frequency Options 2 through I C configuration or autonomously through resis- System Instant On with Smart Power Selector Power- tor configuration. Path Charge Safety Timer The battery charger includes a Smart Power Selector to Die Temperature Regulation with Thermal Foldback accommodate a wide range of battery sizes and system Loop loads. The Smart Power Selector allows the system to Input Power Management with Adaptive Input Current start up gracefully when an input source is available even Limit (AICL) and Input Voltage Regulation when the battery is deeply discharged (dead battery) or 10m BATT to SYS Switch, Up to 10A Overcurrent missing. For battery safety/authentication reasons, the IC Threshold can be configured to keep charging disabled, and allow Reverse Buck Mode 5.1V/1.5A to Support USB OTG the DC-DC to switch and regulate the SYS voltage. The system processor can later enable charging using the ap- JEITA Compliant with NTC Thermistor Monitor 2 2 propriate I C commands. Alternatively, the IC can be con- I C or Resistor Programmable figured to automatically start charging. 3.458mm x 3.458mm 49-Bump WLP Ordering Information appears at end of data sheet. Applications USB Type-C Powered Wide-Input Charging Applications 2-Cell Battery Powered Devices Smart Power Selector is a trademark of Maxim Integrated Products, Inc. 19-100812 Rev 1 7/21MAX77962 23V 3.2A USB-C Buck-Boost Charger with IN OUT Integrated FETs for 2S Li-Ion Batteries Simplified Block Diagram SYS CHGIN V V BUS SYS SYSA Q1 Q3 CSINN PGND CSINP Q Q 2 4 VPVL QBAT PVL BATT VBATT BIAS AND VAVL REFERENCE AVL GATE DRIVER V AVL 2 OPTIONAL I C COMMUNICATION JEITA THM THM SCL SCL 2 BATSP PK+ I C INTERFACE SDA SDA AND INTB INTB CHARGER AND OTG CONTROL INTERRUPT PK- BATSN OTGEN OTGEN 2-CELL LI-ION BATTERY DISQBAT DISQBAT STBY ISET STBY ITO OPTIONAL RESISTOR STAT INLIM STAT PROGRAMMABILITY VSET UVLO VPVL INOKB OVLO THERMAL GND INOKB OCP MONITOR THERMAL SHDN MAX77962MAX77962 www.maximintegrated.com Maxim Integrated 2 BST1 LX1 LX2 BST2