MM1214

MITSUMI Control of Lithium Ion Battery Charging and Discharging MM1214 Control of Lithium Ion Battery Charging and www.DataSheet4U.com Discharging Monolithic IC MM1214 Outline This IC controls constant current charging and excess discharge for lithium-ion batteries (sub-batteries). It performs constant current charging, stops charging at set voltages, and prevents excess discharging. When the voltage falls below a set level, it prohibits discharges and reduces IC current consumption nearly to zero. Features During charging 1. Input voltage range 2. Current consumption (VIN pin) 3. Current consumption (VCC pin) 4. Charging current switching voltage 5. Charging current (normal conditions) 6. Charging current (low voltages) 7. Charging control voltage (Ta =-20~+70°C) 8. Overvoltage detection voltage (Ta =-20~+70°C) 9. Overvoltage reset voltage 10.Overvoltage detection non-induction time 11.Overvoltage reset non-induction time 4.5V~15.0V 9mA typ. 500µA typ. 2.7V±0.1V 105mA typ. 5.0mA typ. 4.200V±0.063V 4.335V±0.065V 3.50V±0.13V 0.80S typ. 0.80S typ. VBATT<4.1V IBATC=0mA CCC=2.22µF CCC=0.22µF During discharging 12.Current consumption (Vbat pin) IL=10mA 13.Current consumption (Vbat pin) IL=0mA 14.Current consumption (Vbat pin) discharging off, : VBAT<2.4V 15.Excess discharging detection voltage 16.Discharge resumption voltage 17.Voltage drop between battery and output (VBATT=3.0V, IL=-10mA) 18.Voltage drop between battery and output (IL=100µA, VBATT=3V) 450µA typ. 15µA typ....