MM1253 [MITSUMI]
Remaining Battery Power Display; 电池剩余电量显示
| 型号： | MM1253 |
| 厂家： | 
MITSUMI ELECTRONICS, CORP. |
| 描述： | Remaining Battery Power Display |
| 文件： | 总6页 (文件大小：122K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Remaining Battery Power Display MM1251, MM1252, MM1253
MITSUMI
Remaining Battery Power Display
Monolithic IC MM1251, MM1252, MM1253
Outline
This IC detects battery voltage and displays the power remaining in the battery. Display of the battery's
remaining power is an indispensable function for portable equipment. The use of this IC makes this display
easily achievable.
The usual method of display of remaining battery power, as in the MM1206, is three marks lighting up in
sequence on an LED or other display. This IC, however, uses only one light to display the remaining battery
power, resulting in lower cost.
Features
1. Adjustable flashing speed
2. Adjustable detection voltage supports all settings
3. Adjustable hysteresis voltage enables response to large ripple settings
4. High precision voltage detection (MM1253) enables support of sets using nickel cadmium and other
batteries
5. The LED can be lit up by the voltage from one battery (type of special built-in step-up circuit : rank B)
Package
SOP-8D (MM1251AF, MM1251BF, MM1252AF, MM1252BF, MM1253AF)
Series Description
Display Pattern
Detection Precision
Normal
Light Off
Light On
Light Off
Low Power
Flashing
Flashing
Flashing
MM1251
MM1252
MM1253
±±30m
±±30m
±ꢀ0m
(Ta=25°C)
Absolute Maximum Ratings
Item
Rating
Unit
°C
°C
m
Storage temperature
Operating temperature
Input voltage
-
43~+125
-23~+73
-
3.±~+±
3.±~+7
±33
Output Terminal Applied Voltage
Allowable loss
-
m
0W
Remaining Battery Power Display MM1251, MM1252, MM1253
MITSUMI
(Unless otherwise specified Ta=25°C, Vc=1.5V, Vs=0.8V)
(Applicable to all models when the model name is left blank.)
Electrical Characteristics
Item
Symbol
Measurement Conditions
Min. Typ. Max. Unit
MM1251
VS=1.0V
25
40
µA
MM1253A
MM1252A
MM1252B
MM1251A
MM1253A
MM1251B
MM1251
MM1252
Current consumption 1
ICC1
0.15 0.25 mA
0.75 0.1 mA
VCT=0.4V
0.15 0.25 mA
Current consumption 2
Detection voltage
ICC2
VD
VS=0.8V, VCT=0.4V
VS=1V 0.5V
25
40
µA
V
0.82 0.85 0.88
<
VHYS 0.1V
=
MM1253 0.841 0.85 0.859
200
V
Detection voltage temperature factor
HYS pin saturation voltage 1
HYS pin saturation voltage 2
CT pin charge current
V/ T
IHYS=5µA
IHYS=25µA
VCT=0.1V
VCT=0.4V
PPM/°C
mV
VHYS1
VHYS2
ICTS
25
50
50
100 mV
-
60
-
40
-
20
nA
nA
V
CT pin discharge current
CT pin threshold value H
CT pin threshold value L
Output sink current
ICTO
20
0.2
0.1
5
40
60
0.4
0.3
<
VCTH
VCTL
IOUT
VCT=0.1 0.4, VO 0.1V
0.3
0.2
10
=
>
VCT=0.4 0.1, VO 0.1V
=
V
VCR=0.4V
VCT=0.4, IOUT=1mA
VS=1V, VOUT=5V
VS=0.8 VCCVOUT > 0.4V
VS=0.8 VCC
mA
Output saturation voltage
Output leak current
IOUTL
ILE
100 150 mA
1
µA
V
Operating limit voltage
VOPR
Rank A
Rank B
0.65 0.75
VCC=0.1V 0.5V
Voltage limit for maintaining
LED flashing
Step-up operation limit voltage
VOPL
0.85 0.95
V
Remaining Battery Power Display MM1251, MM1252, MM1253
MITSUMI
MM1251A/MM1253A
Application Circuit
Timing Chart
VCC
CT
VD
unsettled
OUT
Remaining Battery Power Display MM1251, MM1252, MM1253
MITSUMI
MM1251B
Application Circuit
Timing Chart
VCC VD
CT
unsettled
OUT
Remaining Battery Power Display MM1251, MM1252, MM1253
MITSUMI
MM1252A
Application Circuit
Timing Chart
VCC
VD
CT
unsettled
OUT
Remaining Battery Power Display MM1251, MM1252, MM1253
MITSUMI
Step-up (Rank B) Type Inductor Values
This circuit allows step-up for LED lighting even when low only. The LED repeats On/Off at high frequency,
but to the human eye it appears as if the LED is lit. Therefore, we do not recommend the use of this step-up
circuit in other circuits.
Inductor Value-Oscillation Frequency Characteristics (reference data)
Flashing interval Off interval
500
VCC
300
200
Oscillation frequency
Flash Cycle
100
70
50
30
20
VCC=0.90V
VCC=0.95V
VCC=1.00V
10
100
200
300
500 700 1000
Inductor value (µH)
Note : The above data are reference values. Please set constants using a ±±50 variance.
相关型号：
©2020 ICPDF网 联系我们和版权申明