Outline

This IC is used to control charging of lithium-ion batteries consisting of a single cell. It is a modification of the previous MM1332 charging-control IC, with improved charging voltage accuracy and a smaller package. A low voltage circuit is built in (operates at SW2 = “L” ) that can prohibit low voltage battery (2.15V typ.) charging. When SW2 = “H”, the low voltage circuit is turned off and even a low voltage battery can be charged.

Features

1. Charging voltage accuracy (Ta=25°C) ±25mV/cell

2. Charging voltage accuracy (Ta=0 to 50°C) ±30mV/cell

3. Consumption current (charging on) 250µA typ.

4. Consumption current (charging off) 2µA typ.

5. Low-voltage detection 2.15V typ.

6. Leakage current between CEL and CS 1µA max.

Applications

IC for control of lithium-ion batteries charging.