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Электронный компонент: MONOLITHICICMM1210

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MITSUMI
Remaining Battery Power Display MM1210
Remaining Battery Power Display
Monolithic IC MM1210 Series
Outline
This IC detects battery voltage and displays the remaining power in the battery using an LCD. Long life and
light weight are emphasized in the most recent portable equipment, which increasingly use nickel cadmium
and nickel hydrogen batteries. For these batteries, the discharge characteristics mean that extremely precise
detection of the remaining battery power is required.
This IC enables detection of this type through high precision voltage detection.
Features
1. Two built-in detection voltages
1.18V / 1.06V typ.
2. High precision detection voltages
1% typ.
3. Low current consumption
During detection ; 15 A typ.
During waiting ; 15 A typ.
4. Setting possible during non-induction
It is possible to set a time period for which detection is ignored, as for example when voltage drops due to
temporary heavy loads.
5. Ripple absorption pins
It is possible to check fluctuations in detection through continuous rippling.
6. Built-in hysteresis voltage
Package
SOP-8D (MM1210XF)
Absolute Maximum Ratings
Item
Rating
Storage temperature
-40~+125C
Operating temperature
-20~+70C
Input voltage
5V
Output pin voltage
5V
Allowable loss
300mW
MITSUMI
Remaining Battery Power Display MM1210
Electrical Characteristics
(Unless otherwise specified Ta=25C, V
CC
=1.5V, V
CE
=V
CC
)
Item
Symbol
Measurement Conditions
Min. Typ. Max. Unit
Current consumption
I
CC
1
V
CC
=1.5V
15
25
A
Current consumption during waiting
I
CC
2
V
CC
=1.3V, V
CE
=0.3V
1.5
2.5
A
Detection voltage I
V
TH
1
V
CC
=H L
1.169 1.180 1.191
V
Detection voltage II
V
TH
2
V
CC
=H L
1.050 1.060 1.070
V
Detection voltage Difference
V
T
V
T
=V
TH
1-V
TH
2
100
120
140
mV
Detection voltage temperature factor
200
PPM/C
Hysteresis voltage
V
HYS
10
20
35
mV
Output sink current I
I
S
1
V
CC
=1.3V, V
O
1=0.3V
40
A
Output sink current II
I
S
2
V
CC
=1.3V, V
0
2=0.3V
40
A
Output saturation voltage I
V
O
1
I
SINK
=30UA
150
250
mV
Output saturation voltage II
V
O
2
I
SINK
=30UA
150
250
mV
Output leak voltage I
I
LE
1
V
CC
=1.0V, V
O
1=0.5V
1
A
Output leak voltage II
I
LE
2
V
CC
=1.0V, V
O
2=1.5V
1
A
Power supply voltage operating limit
V
OPL
V
CC
=variable, V
O
< 0.4V
0.70
0.75
V
Input H voltage
V
CEH
-0.3
V
CC
0.3
V
Input L current
I
CEH
V
CC
=1.5V, V
CE
=0V
100
300
500
nA
Input L voltage
V
CEL
-0.3
0
0.3
V
Threshold value I
V
THT
V
CC
=1.0V, V
TC
=variable
0.34
0.42
0.50
V
Threshold value II
V
THT
V
CC
=1.0V, V
TC
=variable
0.04
0.12
0.20
V
Discharge current
I
DIS
V
CC
=1.0V, V
TC
=0.5V
30
60
90
nA
Charge current
I
CHA
V
CC
=1.5V, V
TC
=0.5V
0.40
0.80
1.20
A
Non-induction time
td
V
CC
=1.5V, C=0.033UF
120
180
240
mS
L transmission delay time
tdLH
V
CC
=L H, C=0.033UF
1.0
2.0
4.0
mS
Ripple absorption resistance
RRIP
measure resistance between pins 8-6
70
100
130
k
CE pin
TC pin
Note : V
CC
applied pulse conditions
td1
td2
1.25V
1.15V
GND
1.10V
1.00V
V
CC
applied pulse
MITSUMI
Remaining Battery Power Display MM1210
Timing Chart
1.20V
VS1 1.18V
1.08V
VS2 1.06V
V
C C
G N D
0.75V
0.40V
0.05V
H
L
H
L
CE pin
TC pin
ROUT1
ROUT2
hysteresis
hysteresis
threshold 2
threshold 1
tD1
tD2
tDLH
tDLH
*
Delay time is calculated by the following formula :
tD1=tD2 (S)=C
T
(F) (5.4 10
6
)
tDLH (S)=C
T
(F) (6.3 10
4
)
C
T
, TC pin connection capacitance
Block Diagram, Example of Application Circuit
V
CC
1.18 1.06
ROUT 1
L
H
H
LED 2
L
L
H
H
Operation
L
Waiting
Output
CE pin
Note 1 : Please connect the CE pin
to V
CC
when not using.
Note 2 : The Adj terminal is used in
the product inspection
process, so please do not
connect it to other wiring.
10
1
10
0
10
-1
10
-2
10
-3
10
-4
10
-5
10
-10
1S
100mS
10mS
1mS
0.1mS
0.01mS
100PF
10
-9
1000PF
10
-8
0.01UF
10
-7
0.1UF
10
-6
1UF
Capacitance of external capacitor for non-induction time
MITSUMI
Remaining Battery Power Display MM1210
Characteristics
Detection voltage 1
Temperature characteristics
Detection voltage 2
Temperature characteristics
1188
1184
1180
1176
1172
-10
10
30
50
70
Temperature
(mV)
1068
1064
1060
1056
1052
-10
10
30
50
70
Temperature
(mV)
Hysteresis voltage 1
Temperature characteristics
-10
10
30
50
70
Temperature
(mV)
12
15
18
21
24
27
Hysteresis voltage 2
Temperature characteristics
-10
10
30
50
70
Temperature
(mV)
12
15
18
21
24
27
Output sink current 1
Temperature characteristics
-10
10
30
50
70
Temperature
(mV)
120
160
200
240
280
Output saturation voltage 1
Temperature characteristics
-10
10
30
50
70
Temperature
(mV)
50
60
70
80
90
40