AP9221SA-CC-HAC-7, IC: Supervisor Integrated Circuit; battery charging controller

AP9221 1-Cell Battery Protection IC
Diodes Incorporated AP9221 1-Cell Battery Protection IC is a single-chip protection solution designed for 1-cell Li+ rechargeable battery pack applications. The AP9221 integrates a 1-cell Lithium-ion battery protection chip and a dual N-Channel MOSFET with common drain. The AP9221 provides rich battery protection features and can turn-off the N-Channel MOSFET by detecting overcharge voltage/current, over-discharge voltage/current, or load short circuit. The AP9221 has built-in fixed delay time to protect external components.