MITSUMI
Control of Lithium Ion Batteries Charging MM1332
Control of Lithium Ion Batteries Charging
Monolithic IC MM1332
Outline
This IC is a high precision constant voltage constant current power source controller for lithium ion batteries
serving as power drivers for P-MOS FET. It was developed for use with one to three cell chargers, and the
constant current value can be set freely with external resistance. It has a built-in amplifier for detecting low
battery voltage. Using this IC enables the easy addition of a lithium ion battery charging function to
conventional battery-charging devices.
Features
1. Output voltage (Ta=-20擄C+~70擄C)
3Cell : 12.3V/12.6V鹵150mV
2Cell : 8.2V/8.4V鹵100mV
1Cell : 4.1V/4.2V鹵50mV
250碌A(chǔ) typ.
set by external resistance
0.1V=external resistance current value
2.0V/cell
2. Current consumption
3. Constant current output
Current limit (reference voltage)
4. Low voltage detection function (LV)
Package
SOP-8C, SOP-8E (MM1332 F)
The box represents the output (charging) voltage rank.
*
Applications
1. For charging lithium ion batteries
2. High-precision
Stable power sources for all types of equipment
Absolute Maximum Ratings
Item
Storage temperature
Operating temperature
Power supply voltage
Output voltage
SW input voltage
(Ta=25擄C)
Symbol
T
STG
T
OPR
V
CC
max.
V
O
max.
V
SW
Pd
Rating
-40~+125
-20~+70
-0.3~+18
-0.3~V
CC
-0.3~V
CC
+0.3
300
Units
擄C
擄C
V
V
V
mW
Allowable power dissipation
1
2
3
4
