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MM1291AF

Part Number	MM1291AF
Manufacturer	MITSUMI
Description	Protection of Lithium Ion Batteries (one cell)
Published	May 7, 2005
Detailed Description	MITSUMI Protection of Lithium Ion Batteries (one cell) MM1291 Protection of Lithium Ion Batteries (one cell) Monolith...
Datasheet	MM1291AF PDF File

Overview

MITSUMI Protection of Lithium Ion Batteries (one cell) MM1291 Protection of Lithium Ion Batteries (one cell) Monolithic IC MM1291 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 li...

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MM1291AF Protection of Lithium Ion Batteries (one cell) - MITSUMI

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