MITSUMI

Charge and discharge control for coin-type lithium batteries and manganese dioxide lithium batteries MM1177

Block Diagram

Absolute Maximum Ratings

Item

Symbol

Rating

Units

Storage temperature

-40~+125

°C

Operating temperature

-20~+70

°C

input voltage

18

V

Charging voltage

3.5

V

Allowable power dissipation

300

mW

Charging current

10

mA

Discharging current

1mA

Item

Symbol

Measurement Conditions

Min

Typ. Max. Units

Input voltage operation range

4.0

15.0

V

Current consumption 1

during charging (constant voltage charge)

100

180

µA

Current consumption 2

charging off

30

45

µA

Charging current (limiter current)

4.0

4.5

5.0

mA

Limiter mode off

1177AF

3.00

V

1177BF

2.70

Charging OFF voltage

1177AF

3.20 3.275 3.35

V

1177BF

2.93

3.00

3.07

V

Current consumption (battery)

5

8

µA

Leak current when discharging

is prohibited

0.1

µA

Voltage when discharging is prohibited

1.60

1.75

1.90

V

Voltage drop between battery

75

100

mV

and output

OUT2 pin voltage

2.85

2.92

3.00

V

Note : Do not connect the OUT2 pin to the load; it does not have current supply capability.

To delay discharge prohibition, or suppress discharge prohibition caused by noise, connect a capacitor

between the OUT2 pin and GND.