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MM1214

Control of Lithium Ion Battery Charging and Discharging

Mitsumi 

MITSUMI

Control of Lithium Ion Battery Charging and Discharging MM1214

Control of Lithium Ion Battery Charging and 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

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)

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.

450µA typ.

15µA typ.

0.1µA max.

2.30V±0.19V

2.70V±0.1V

70mV typ.

2.92V typ.

Package

SSOP-16A (MM1214XF)

Application

For overnight charging

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