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 longterm battery life.

    The RY2201 requires a minimal number of readily available, external components and is available in a space saving SOT23-5 package.

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

RoHS Compliant and Lead (Pb) Free

40mΩ Low RSS(ON) Internal Power MOSFET

Delay Times are generated inside

High-accuracy Voltage Detection

Low Current Consumption Operation Mode: 2.5μA typ.Power-down Mode: 1.5μA typ.

Only One External Capacitor Required

Available in SOT23-5 Package

-40°C to +85°C Temperature Range

One-Cell Li-ion Battery Pack

Power Bank

One-Cell Li-poly Battery Pack

IOT Sensor/Electronic Toys

Order Information

Marking	Part No.	Model	Description	Package	T/R Qty
MKYLL	70702030	RY2201	RY2201 One Cell Li-ion and Li-poly Battery Protection IC, 3A, SOT23-5	SOT23-5	3000 PCS

RY2201典型应用图：