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. The
low standby current drains little current from the cell while in storage. The device is not only targeted for digital
cellular phones, but also for any other Li-Ion and Li-Poly battery-powered information appliances requiring long
term battery life.
The RY2231 do not require external resistor and capacitor, is available in a space saving DFN4-1×1 package.
2.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
• 55mΩ 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: 0.1μA typ.
• Resistor and Capacitor inside
• Available in DFN4-1×1 Package
• -40°C to +85°C Temperature Range
3.Applications
• One-Cell Li-ion Battery Pack
• Power Bank
• One-Cell Li-poly Battery Pack
• IOT Sensor/Electronic Toys/ Wearable Devices
4.Typical Application Circuit
5.Pin Configuration
