EC9523 – Single Cell Battery Protection IC
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.
Typical Applications circuit