MM1309 查看數據表（PDF） - Mitsumi

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MM1309

Protection of Lithium Ion Batteries (three cells in series)

Mitsumi 

MITSUMI

Protection of Lithium Ion Battery (three cells in series) MM1309

Pin Assignment

8765

1234

SOP-8C

1

DCHG

2

N. C

3

OV

4

GND

5

BATL

6

BATM

7

BATM

8

VCC

Pin Description

No. Pin Output

Function

1

DCHG Output FET drive pin for excess discharge control

2

N. C

3

OV Output FET drive pin for overcharge control

4

GND

Negative connection pin for the low side battery. Also, IC GND pin.

(IC reference power supply pin)

Positive connection pin for the low side battery, and negative connection pin for the

5

BATL Input

middle side battery.

Positive connection pin for the middle side battery, and negative connection pin for

6

BATM Input

the high side battery.

7

BATM Input Positive connection pin for the high side battery.

8

VCC

IC positive power supply input pin.

Timing Chart

Excess discharge

BATH

BATM

BATL

VCELL U

VCELL O

VCELL D

VCELL S

VCELL U

VCELL O

VCELL D

VCELL S

VCELL U

VCELL O

VCELL D

VCELL S

H

DCHG

L

Overcharge

Normal

Normal Unbalanced (large voltage differences)

Excess discharge Overcharge

Normal

Normal

Excess discharge

Overcharge

VALM

VALM

VALM

OV

L High Impedance

High Impedance

High Impedance

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