南芯产品规格书SC8922A.pdf

SOUTHCHIP SEMICONDUCTOR SC8922A DATASHEET SOUTHCHIP CONFIDENTIAL High Efficiency, Synchronous Boost Charger for Two/Three-cell Li-ion Battery with Cell Balance Function 1 DESCRIPTION 2 FEATURES The SC8922A is a highly integrated switch-mode boost • Integrated Synchronous Boost Charger charger for 2/3 cells Li-ion battery applications. It is able to • Cell Balance Function step up 4.5V~5.5V input voltage to up to 16V, and provide • Charging Management (Trickle Charge / Constant battery charge management functions including trickle charge, constant current charge, constant voltage charge, charge Current Charge / Constant Voltage Charge / Charge termination and charging status indication. Besides that, the Termination) IC can also provide cell balance function, so to reduce the cell • Programmable Constant Charge Current voltage mismatch and increase the battery life time. • Programmable Constant Voltage The SC8922A supports up to 3A charge current, and the user • Charge Status Indication can program the current freely through external resistor for different applications. • Charge Safety Timer The SC8922A supports input current limit, input under voltage • NTC for