IC for Control of Lithium-ion Betteries Charging MM1438
MITSUMI
Block Diagram
Pin Description
Pin No. Pin name
I/O
Pin Description
1
GND
Input
Ground pin
Low voltage detection circuit output pin
ON with NPN-Tr open collector output at low voltage
Low voltage detection circuit ON/OFF control input pin
SW2 = VCC: OFF, SW2 = GND: ON
2
LV
Output
3
4
SW2
SW1
Input
ON/OFF control input pin for the IC
SW1 = VCC: OFF, SW1 = GND: ON
Input
Input
5
6
VCC
Power supply input pin
EXT
Output Charging control output pin Controls external PNP-Tr to control charging.
Battery voltage input pin
7
CEL
Input
Detects battery voltage and controls rated voltage to the prescribed voltage value.
Current detection pin
8
CS
Input
Detects current by drop in external resistor voltage and controls rated current.
Current value can be set at 0.1V/R1 typ.
MITSUMI [ MITSUMI ELECTRONICS, CORP. ]
