General Description

FS325 is a series of lithium-ion and lithium-polymer rechargeable battery protection ICs with high accurate voltage detection and delay circuits.
These ICs are suitable for protection of single cell lithium-ion or lithium polymer battery packs from over charge, over discharge and over current.



Low supply current, Normal Operation : 2.5μA typ. @VDD=3.9V
Power-down mode : 0.05μA typ. @VDD=2.0V Auto recovery function : 1.8μA typ. @VDD=2.0V
Overcharge detection voltage﹝VOCU﹞ 4.2V~4.4V, Accuracy of 25mV
Overcharge release voltage﹝VOCR﹞ 3.8V~4.2V, Accuracy of 50mV
Overdischarge detection voltage﹝VODL﹞ 2.0V~2.8V, Accuracy of 100mV
Overdischarge release voltage﹝VODR﹞ 2.8V~3.2V, Accuracy of 100mV
Over current detection voltage﹝VOI1﹞ 0.10V~0.13 V, Accuracy of 10mV
Short circuit detection voltage﹝VOI2﹞ Fixed at 1.35V
Delay times are generated by an internal circuit. (External capacitors are unnecessary.)
Charger detection voltage -0.09 V
Reset resistance for Over current protection >150k
Wide supply voltage range 1.5 ~ 5.5V
Small package SOT-23-5
0V-Battery charging function



Protection IC for One-Cell Lithium-Ion / Lithium-Polymer Battery Pack



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