MM1451 Datasheet | Mitsumi Electronics

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 m V/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 .. 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 V3 3-cell power supply V2 2-cell power supply V1 1-cell power supply Ct Delay capacity pin 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 voltage - 1 Ct pin voltage - 2 VOUT pin voltage Allowable loss (Ta=25°C) Symbol TOPR TSTG VCC V1 V2 V3 VCT VOUT Pd -0.3~18 -0.3~18 170 V V m W -0.3~18 V Ratings -20~+80 -40~+125 Unit °C °C Note 1 : 1 18V > = V3 > = V2 > = V1 > = -0.3 Note 2 : 2 Do not impress current of 300µA or more on the Ct pin. - -...