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MM1302AF

Protection of Lithium Ion Batteries (two cells in series)

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MITSUMI

Block Diagram

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

Note 1. 45µA max. (current consumption during operation of overcharge detection section) flows to input

protection resistor R1.

Note 2. 0.3µA max. (when cells are balanced) flows to input protection resistor R2. When the cells are not

balanced, the current increases to wards correction.

t OP

Operating

interval

t1

t ST

waiting interval

Data intake

prohibition interval

t2

Data intake prohibition interval

30µA

5µA

tOP tST

Current

consumption

Time

Average

current

Timing for setting non-induction time

VCELL>4.25V

Data processing VCELL<4.25V

section

Reset

Non-induction

time

Overcharging

VH

identification

GC

VCS (battery-)

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