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MM1294 Datasheet - MITSUMI

Datasheet Details

Part number:

MM1294

Manufacturer:

MITSUMI

File Size:

169.25 KB

Description:

Protection of Lithium Ion Batteries (four cells in series)

Features

* 1. Current consumption (overcharging) VCELL > VCELLU 170µA typ. 2. Current consumption (normal operation) VCELL < VALM 35µA typ. 3. Current consumption (overdischarge) VCELL < VCELLS 0.1µA max. 4. Overcharge detection voltage (-20 to +70°C) VCELL : L H 4.25V±50mV/CELL 5. Overcharge hystereis voltage

MM1294_MITSUMIELECTRIC.pdf

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

Pin no.

Pin name Input/ output Output Function Overcharge detection output pin NPN transistor open collector output; normally high impedance, goes to L level on overdischarge Overcurrent detection pin Monitors equivalent load current through source-drain voltage drop of discharge-controlling FET, an

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

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