RY2231 Li-ion and Li-poly Battery Protection IC

1、Features 

? Protection of Charger Reverse Connection

? Protection of Battery Cell Reverse Connection 

? Over-Temperature Protection 

? Overcharge Current Protection 

? Two-step Overcurrent Detection: Over Discharge Current Load Short Circuiting 

? Charger Detection Function 

? 0V Battery Charging Function 

? 50mΩ Low RSS(ON) Internal Power MOSFET 

? Delay Times are generated inside 

? High-accuracy Voltage Detection 

? Low Current Consumption Operation Mode: 0.7μA typ. Power-down Mode: 0.4μA typ. 

? Resistor and Capacitor inside

? Available in DFN4-1×1 Package 

? -40°C to +85°C Temperature Range

2、Applications 

? One-Cell Li-ion Battery Pack 

? Power Bank 

? One-Cell Li-poly Battery Pack 

? IOT Sensor/Electronic Toys/ Wearable Devices

3、General Description

    The RY2231 is a high integration solution for lithium-ion/polymer battery protection. RY2231 contains internal power MOSFET, high-accuracy voltage detection circuits and delay circuits. RY2231 has all the protection functions required in the battery application including overcharging, over discharging, overcurrent and load short circuiting protection etc. The accurate overcharging detection voltage ensures safe and full utilization charging. Thelow standby current drains little current from the cell while in storage.

4、Website：www.baitaishengshi.com

5、Typical Application Circuit