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MM1291AF Datasheet (PDF) - Mitsumi Electronics, Corp.

MM1291AF Datasheet PDF - Mitsumi Electronics, Corp.
Part # MM1291AF
Download  MM1291AF Download

File Size   172.83 Kbytes
Page   7 Pages
Manufacturer  MITSUMI [Mitsumi Electronics, Corp.]
Direct Link  https://www.mitsumi.co.jp/index_e.html
Logo MITSUMI - Mitsumi Electronics, Corp.
Description Protection of Lithium Ion Batteries (one cell)

MM1291AF Datasheet (PDF)

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MM1291AF Datasheet PDF - Mitsumi Electronics, Corp.

Part # MM1291AF
Download  MM1291AF Click to download

File Size   172.83 Kbytes
Page   7 Pages
Manufacturer  MITSUMI [Mitsumi Electronics, Corp.]
Direct Link  https://www.mitsumi.co.jp/index_e.html
Logo MITSUMI - Mitsumi Electronics, Corp.
Description Protection of Lithium Ion Batteries (one cell)

MM1291AF Datasheet (HTML) - Mitsumi Electronics, Corp.

MM1291AF Datasheet HTML 1Page - Mitsumi Electronics, Corp. MM1291AF Datasheet HTML 2Page - Mitsumi Electronics, Corp. MM1291AF Datasheet HTML 3Page - Mitsumi Electronics, Corp. MM1291AF Datasheet HTML 4Page - Mitsumi Electronics, Corp. MM1291AF Datasheet HTML 5Page - Mitsumi Electronics, Corp. MM1291AF Datasheet HTML 6Page - Mitsumi Electronics, Corp. MM1291AF Datasheet HTML 7Page - Mitsumi Electronics, Corp.

MM1291AF Product details

Outline
This is a protection IC for one-cell series that protects lithium ion batteries during excess charging, discharging, or 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 functions for turning off the external FET switch (overcurrent detection). These function comprise a protection circuit, with few external parts, for lithium ion batteries.

Features
1. Current consumption (during overcharging) VCC=4.5V VCC pin 40µA typ. VIN pin 3µA typ.
2. Current consumption (normal) VCC=3.5V VCC pin 7µA typ. VIN pin 2µA typ.
3. Current consumption (during excess discharge) VCC=1.9V 0.7µA typ.
4. Consumption current (during excess discharge) VCC=1.0V 0.17µA max.
5. Overcharge detection voltage (Ta=-20°C~+70°C) A 4.35V±50mV
                                                                                   B 4.25V±50mV
                                                                                   C 4.10V±50mV
6. Overcharge detection hysteresis A 200mV typ.
                                                         B 200mV typ.
                                                         C 27mV typ.
7. Overcharge non-induction time CTD=0.082µF 1S typ.
8. Excess discharge voltage 1 VCS=0V 2.6V±0.1V
9. Excess discharge voltage 2 VCS=0.05V 2.4V±0.1V
10.Excess discharge reset voltage 2.9V±0.12V
11.Excess discharge during non-induction 10mS typ.
12.Overcurrent detection voltage A 100mV±10mV
                                                     B 100mV±10mV
                                                     C 150mV±15mV
13.Reset after overcurrent detection load release
14.Overcurrent detection non-induction time 10mS typ.

Applications
1. Cellular phones
2. PHS
3. MD
4. others




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