April 20, 2024 
Professional magazine and portal dedicated to electronics 
The AP9221 is a single chip protection solution specially designed for 1-cell Li+ rechargeable battery pack application. The AP9221 includes a 1-cell Lithium ion battery protection chip and dual N-CH MOSFET with common drain.
The AP9221 provides rich battery protection features and can turn-off the N-CH MOSFET by detecting overcharge voltage/current, over discharge voltage/current, or load short circuit. The AP9221 has builtin fixed delay time to save external components. The AP9221 is available in the U-DFN2030-6 (Type C) package.
Applications: Li+ Rechargeable battery pack, Portable Applications, Wearable Applications, Compact Single Li-ion battery products (more info).
