MM1438

MITSUMI IC for Control of Lithium-ion Betteries Charging MM1438 IC for Control of Lithium-ion Betteries Charging Monolithic IC MM1438 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. Features 1. Charging voltage accuracy (Ta=25°C) 2. Charging voltage accuracy (Ta=0 to 50°C) 3. Consumption current (charging on) 4. Consumption current (charging off) 5. Low-voltage detection 6. Leakage current between CEL and CS ±25mV/cell ±30mV/cell 250µA typ. 2µA typ. 2.15V typ. 1µA max. Package VSOP-8B Applications IC for control of lithium-ion batteries charging. Pin Assignment 8765 1234 VSOP-8B 1 GND 2 LV 3 SW2 4 SW1 5 VCC 6 EXT 7 CEL 8 CS MITSUMI Block Diagram IC for Control of Lithium-ion Betteries Charging MM1438 Pin Description Pin No. Pin name I/O 1 GND Input 2 LV Output 3 SW2 Input 4 SW1 Input 5 VCC ...