Datasheet > MM1294

MM1294

更新时间： 2024-09-27 22:46:11

品牌	Logo	应用领域
三美电机 - MITSUMI		电池
页数	文件大小	规格书
6页	169K
描述
Protection of Lithium Ion Batteries (four cells in series)

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MM1294 数据手册

Protection of Lithium Ion Batteries (four cells in series) MM1294

MITSUMI

Protection of Lithium Ion Batteries (four cells in series)

Monolithic IC MM1294

Outline

This IC provides protection for lithium ion batteries in the event of overcharging, overdischarging and

overcurrents. When anomalies occur during charging or at other times and excessive voltages are applied,

after a certain time has elapsed for each cell an external FET switch is turned off (overcharging detection); and

in order to prevent overdischarge of the battery during discharge, when the voltage of individual batteries falls

below a fixed voltage, an external FET switch is turned off (overdischarge detection), and the IC is put into

low-consumption current mode. When large currents flow due to a short-circuit or other cause, an external

MOS switch is turned off (overcurrent detection).

4-Cell Protection ICs

Overcharge Overcharge Overdischarge Overdischarge Overcurrent At overcurrent

detection

Overcurrent

release conditions

Load release

Rank

detection voltage hysteresis voltage detection voltage resume voltage detection voltage

4.35V 5ꢀ0V 2ꢀꢀ0V typ. 2.35V typ. 3.ꢀ5V typ.

15ꢀ0V typ. Pin 3 (DOHG pin) L

3ꢀꢀkΩ or 0ore

4.25V 5ꢀ0V

Sa0e as rank A 2ꢀꢀ0V typ.

2.4ꢀV typ. 3.1ꢀV typ.

Sa0e as rank A

Charging reset

Features

1. Current consumption (overcharging)

2. Current consumption (normal operation)

3. Current consumption (overdischarge)

VCELL > VCELLU

170µA typ.

V^CELL< VALM

35µA typ.

V^CELL< VCELLS

0.1µA max.

4. Overcharge detection voltage (

5. Overcharge hystereis voltage

6. Overcharge sensing dead time

20 to +70°C)

VCELL : L

V^CELL: H

C=0.1µF

V^CELL: L

V^CELL: H

C=0.1µF

4.25V 50mVꢀCELL

VCELLU-200mVꢀCELL typ.

1.0S typ.

7. Overcharge sensing operation voltage

8. Overdischarge detection voltage

9. Overdischarge sensing dead time

10.Overcurrent detection voltage

4.10V 150mVꢀCELL

2.40VꢀCELL typ.

1.0S typ.

0.15V typ.

11.Overcharge and overdischarve voltages as well as the overcurrent detection voltage can be changed upon

request.

Package

SSOP-16

Applications

Lithium ion battery pack for notebook computers

12 3 4 5 6

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