DESCRIPTION

The AIC1804 is designed to protect the lithiumion battery from damage or degrading the lifetime due to overcharging, overdischarging and overcurrent for three- or four-cell lithium-ion battery powered systems such as notebook PCs. It can also provide the cell-balancing “bleeding” function to automatically discharge the overcharged cell until the overcharge condition is released.

FEATURES

● Cell Number Selection Function to Select 3 or 4 cells Protection.

● Ultra-Low Quiescent Current at 17mA (4-Cell, V CELL=3.5V).

● Ultra-Low Power-Down Current at 2.2mA (4-Cell, V CELL=2.3V)

● Wide Supply Voltage Range: 2V to 18V.

● Precision Overcharge Protection Voltage:

4.35V± 30mV for the AIC1804A

4.30V± 30mV for the AIC1804B

4.25V± 30mV for the AIC1804C

4.20V± 30mV for the AIC1804D

● Externally Set Overcharge, Overdischarge and Overcurrent Delay Time.

● Built-in Cell-balancing Bleeding Network under Overcharge Condition.

● Three Detection Levels for Overcurrent Protection.

APPLICATIONS

● Protection IC for Three- or Four-Cell Lithium-Ion Battery Packs.