MM1451

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) 2. Consumption current (Vcell=3.8V) 3. Consumption current (Vcell=2.3V) 4. Pin I/O current between cells (Vcell=3.8V) 5. Delay time on overcharge voltage detection (Ct=0.22µF) 6. Output current (Vcell=VCC=4.5 V) ±50 mV/cell. 3µA typ. 0.3µA typ. 0.3µA max. 1.5S typ. 500µA typ. Package VSOP-8B Applications IC for double-protection of lithium-ion batteries www.DataSheet4U.com with one to three cells. Pin Assignment 1 2 8 7 6 5 3 4 1 2 3 4 5 6 VSOP-8B 7 8 V3 V2 V1 GND Ct N.C OUT VCC MITSUMI Protection of Lithium-Ion Batteries (for Double-Protect) MM1451 Block Diagram 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 MITSUMI Protection of Lithium-Ion Batteries (for Double-Protect) MM1451 Absolute Maximun Ratings Item Operating temparature Storage temparature VCC Input voltage V1 Input voltage *1 V2 Input voltage *1 V3 Input vo...