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MM1291EF

Protection of Lithium Ion Batteries (one cell)

Mitsumi 

MITSUMI

Block Diagram

Protection of Lithium Ion Batteries (one cell) MM1291

VS indicates average values.

VALML is low due to the effect of R1 linked to the VIN pin.

*1 A : 4.150V

B : 4.050V

C : 4.073V

*2 A : 4.350V

B : 4.250V

C : 4.100V

*3 A : 0.10V

B : 0.10V

C : 0.15V

Timing Chart

VIN

(VCC)

CS

Charge

Excess Normal

discharge

VALM

VALML

VDF

VS1

0V

unsettled

*1 1.0V

0V VCS

VST

Charge

Charge

Excess Normal Excess

Charge

discharge

Overcurrent protection

Normal

Normal

Excess

discharge

Overcurrent protection

Normal

Normal Excess discharge

Load release

Load release

Load release

unsettled

GD

0V

TOO

TOC1

TOD TOC2 TOC2

TD

0V

OC

0V

TALM

*1 C only

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