MITSUMI
Remaining Battery Power Display MM1206
Remaining Battery Power Display
Monolithic IC MM1206
Outline
This IC detects battery voltage and displays the remaining power on an LED or LCD display. The appeal of
battery-driven equipment lies in its portability, but when the battery runs down and the equipment does not
function, customer complaints and breakdowns may result.
This IC prevents such trouble before it starts.
Features
1. There are three displays for remaining battery power :
FULL / MIDDLE / EMPTY.
2. Nine patterns built in for detection voltage, linked to two manganese batteries.
Standard setting : 2.5V, 2.25V
3. External parts held to a minimum
Package
SOP-8D (MM1206XF)
VSOP-8A (MM1206AF)
Detection Voltage Matrix Chart
SW1
GND
GND
GND
OPEN
OPEN
OPEN
V
CC
V
CC
V
CC
SW2
GND
OPEN
V
CC
GND
OPEN
V
CC
GND
OPEN
V
CC
Detection Voltage 1 Detection Voltage 2
2.64V
2.62V
2.60V
2.52V
2.50V
2.48V
2.42V
2.40V
2.38V
2.35V
2.27V
2.18V
2.35V
2.25V
2.17V
2.30V
2.24V
2.15V
*
Voltage Accuracy1 : ±100mV typ.
Detection Voltage
Detection Voltage 2 : ±90mV typ.
Absolute Maximum Ratings
Item
(Ta=25°C)
Rating
-40~+125°C
-20~+70°C
5V
300mW
Storage temperature
Operating temperature
Input voltage
Allowable loss
MITSUMI
Remaining Battery Power Display MM1206
Electrical Characteristics
Item
Current consumption
I
Detection voltage
I
Detection voltage
II
Detection voltage difference
(Unless otherwise specified Ta=25°C, SW1=SW2=open)
Symbol
I
CC
V
TH
1
V
TH
2
V
T
V
TH
/
T
SW1=GND
SW1=V
CC
SW2=GND
SW2=V
CC
V
CC
=2.7V, V
CE
=0.5V
V
CC
=2.38V, V
CE
=0.5V
V
CC
=2.0V, V
CE
=0.5V
V
CC
=2.7V, I
SINK
=1mA
V
CC
=2.38V, I
SINK
=1mA
V
CC
=2.0V, I
SINK
=1mA
V
CC
=2.3V, V
CE
=1.5V
V
CC
=2.7V, V
CE
=1.5V
V
CC
=2.0V, V
CE
=1.5V
V
CC
=2.5V, V
CE
=1.5V
70
-70
70
-70
5
5
5
+ V
T
1
- V
T
1
+ V
T
2
- V
T
2
I
S
1
I
S
2
I
S
3
V
CE
1
V
CE
2
V
CE
3
I
LE
1
I
LE
2
I
LE
2'
I
LE
3
Measurement Conditions
V
CC
=3.0V
V
CC
=H L
V
CC
=H L
V
T
=V
TH
1-V
TH
2
2.4
2.16
210
Min. Typ. Max. Unit.
0.75
2.5
2.25
250
±200
100
100
10
10
10
100
100
50
150
150
80
1
1
1
1
130
130
-100 -130
-100 -130
1.1
2.6
2.34
290
mA
V
V
mV
ppm/°C
mV
mV
mV
mV
mA
mA
mA
mV
mV
mV
µA
µA
µA
µA
Detection voltage temperature factor
Detection voltage
I,
Adjustment 1
Detection voltage
I,
Adjustment 2
Detection voltage
II,
Adjustment 1
Detection voltage
II,
Adjustment 2
Output sink current
I
Output sink current
II
Output sink current
III
Output saturation voltage
I
Output saturation voltage
II
Output saturation voltage
III
Output leak voltage
I
Output leak voltage
II
Output leak voltage
II
Output leak voltage
III
Block Diagram, Example of Application Circuit
2.50V
LED1
LED2
LED3
ON
OFF
OFF
ON
OFF
2.25V
OFF
OFF
ON
OFF
Timing Chart
V
CC
2.50V
2.25V
ON
LED1 OFF
ON
LED2
OFF
LED3
ON
OFF
