RY2201 Cell Li-ion and Li-poly Battery Protection IC

RY2201 Cell Li-ion and Li-poly Battery Protection IC

  • 2025-09-17
  •  86

RY2201 One Cell Li-ion and Li-poly Battery Protection IC

1、Features • Protection of Battery Cell Reverse Connection without External load 

• Over-temperature Protection 

• Overcharge Current Protection

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

• Charger Detection Function 

• 0V Battery Charging Function 

• RoHS Compliant and Lead (Pb) Free

• 54mΩ 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: 0.5μA typ. 

• Only One External Capacitor Required 

• Available in SOT23-5 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

3、General Description

     The RY2201 is a high integration solution for lithium-ion/polymer battery protection. RY2201 contains internal power MOSFET, high-accuracy voltage detection circuits and delay circuits. RY2201 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 RY2201 requires a minimal number of readily available, external components and is available in a space saving

 SOT23-5 package.

4、Website：www.baitaishengshi.com

5、Typical Application Circuit


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