EC9523 – Single Cell Battery Protection IC

General description

The EC9523 Li-ion/Li-polymer battery protection IC has high accuracy voltage detector and delay time circuit inside.0V charge function and self-recovery function are available.The operating quiescent current is very low. It is designed to protect 1-cell lithium-ion/lithium polymer rechargeable batteries from damage or degrading life time due to the overcharge,over discharge and charge/discharge over current etc.


l   Overcharge detection voltage 4.25 V to 4.35V,   Accuracy ±50 mV

l   Overcharge release voltage 4.05 V to 4.15V,  Accuracy ±50 mV

l   Overdischarge detection voltage 2.3 to 2.5V, Accuracy ±100 mV

l   Overdischarge release voltage 2.9 to 3.1V,  Accuracy ± 100 mV

l   Ultra-low operating current 2.5μA@Vcc=3.9V

l   Self-recovery function available

l   Overcurrent protection and load short protection

l   0V charge function available

l   Over charge current protection available


l   Single cell Lithium-ion/Lithium polymer  rechargeable battery pack.

Pin Configurations

Ordering info

Typical Applications circuit