MM1292D 参数 Datasheet PDF下载

MITSUMI

Protection of Lithium Ion Batteries (two cells in series) MM1292

Protection of Lithium Ion Batteries (two cells in series)

Monolithic IC MM1292

Outline

This IC is for protecting a lithium ion battery from overcharging, excess discharging, and overcurrent. If

abnormalities occur during charging and excess voltage is applied, it has a function that turns off the external

FET switch when voltage is applied to each battery beyond a specified time (overcharging detection). It also

has a function that turns off the external FET switch when the voltage for each battery falls below a set

voltage, to prevent excess discharge when discharging the battery (discharging detection). At that time, the IC

is switched to low current consumption mode. Also, when there is a large current flow due to shorting or other

reasons, there is a function for turning off the external FET switch (overcurrent detection).

These functions comprise a protection circuit, with few external parts, for lithium ion batteries.

2-Cell Protection ICs

Model name

MM1302A

MM1292C

MM1292D

MM1302E

MM1302F

MM1302G

MM1292H

MM1292J

MM1292K

MM1292L

Overcharge protection

Detection voltage

Hysteresis

4.25±0.05V

10mV

4.25±0.05V

200mV

4.35±0.05V

200mV

4.10±0.05V

10mV

4.35±0.05V

10mV

4.215±35V

10mV

4.30±0.05V

220mV

4.25±0.05V

220mV

4.25±0.05V

220mV

4.25±0.05V

220mV

Overdischarge protection

Detection voltage

Hysteresis

2.3V±0.1V

700mV

2.4V±0.1V

600mV

2.4V±0.1V

600mV

2.4V±0.1V

600mV

None

2.3V±0.1V

700mV

2.05V±0.1V

950mV

2.4V±0.1V

600mV

2.4V±0.1V

600mV

2.2V±0.1V

800mV

Overcurrent

Detection voltage

220±20mV

150±15mV

150±15mV

150±15mV

None

220±20mV

170±15mV

150±15mV

150±15mV

100±10mV

Features

1. Current consumption (during overcharging)

2. Current consumption (normal)

3. Current consumption (during excess discharging)

4. Current consumption (during excess discharging)

5. Overcharge detection voltage (Ta=-20°C~+70°C)

6. Hysteresis voltage

7. Excess discharge detection voltage

8. Discharge resumption voltage

9. Overcurrent detection voltage

10.Reset after overcurrent detection

11.Operating limit voltage

V

CELL

=4.5V

V

CELL

=3.5V

V

CELL

=1.9V

V

CELL

=1.0V

80µA typ.

13µA typ.

0.5µA typ.

0.1µA max.

4.25V±50mV (detection for each cell)

200mV±60mV (detection for each cell)

2.4V±0.1V (detection for each cell)

3.0V±0.1V (detection for each cell)

150mV±15mV

load release

0.9V max.

Package

SOP-8C, SOP-8D(MM1292 F)

The box represents the rank resulting from the combination of protection functions.

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