MITSMI MM1451 Datasheet
MITSUMI
1432
8567
VSOP-8B
MITSUMI
Protection of Lithium-Ion Batteries (for Double-Protect) MM1451
Protection of Lithium-Ion Batteries (for Double-Protect)
Monolithic IC MM1451
Outline
This IC is used for double-protection of lithium-ion batteries with from one to three cells, and has an ultracompact package. Short-circuits between cells accommodate series connections of one to three cells.
Features
1. Overcharge detection voltage accuracy (0°C to 50°C) ±50 mV/cell.
2. Consumption current (Vcell=3.8V) 3µA typ.
3. Consumption current (Vcell=2.3V) 0.3µA typ.
4. Pin I/O current between cells (Vcell=3.8V) 0.3µA max.
5. Delay time on overcharge voltage detection (Ct=0.22µF) 1.5S typ.
6. Output current (Vcell=V
CC=4.5 V) 500µA typ.
Package
VSOP-8B
Applications
IC for double-protection of lithium-ion batteries with one to three cells.
Pin Assignment
1 V3
2 V2
3 V1
4 GND
5 Ct
6 N.C
7 OUT
8 V
CC
MITSUMI
MITSUMI
Block Diagram
Protection of Lithium-Ion Batteries (for Double-Protect) MM1451
MITSUMI
Protection of Lithium-Ion Batteries (for Double-Protect) MM1451
Pin Description
Pin No. Pin name Functions Equivalent circuit diagram
1 V3 3-cell power supply
2 V2 2-cell power supply
3 V1 1-cell power supply
5 Ct Delay capacity pin
7 OUT OUT pin
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