Outline

This IC was developed for use in controlling charging and discharging of lithium ion batteries (battery modules

with three cells connected in series). In charging control, the voltage of the battery module as a whole is controlled in constant-voltage control. Discharge control and monitoring of overvoltage rely on monitoring of

the voltages of individual cells.

Features

1. Charging control voltage VBATH=12.465V±1.5% (Ta=-20°C~70°C)

2. Overcharge detection voltage VCELL=4.335V±1.5% (Ta=-20°C~70°C)

3. Internal circuit for setting dead time (for overvoltage detection, discharge control)

4. Low consumption current on overdischarge IBATH3=1µA typ.

5. High-precision internal overvoltage detection startup circuit (cell voltage 4.2V or higher at end of charging)