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MM1292MFF

Description
Power Management Circuit
CategoryPower/power management    The power supply circuit   
File Size104KB,7 Pages
ManufacturerMitsumi Electric Co., Ltd.
Download Datasheet Parametric View All

MM1292MFF Overview

Power Management Circuit

MM1292MFF Parametric

Parameter NameAttribute value
MakerMitsumi Electric Co., Ltd.
package instruction,
Reach Compliance Codeunknown
MITSUMI
Protection of Lithium Ion Batteries (two cells in series) MM1292, 1302
Protection of Lithium Ion Batteries (two cells in series)
Monolithic IC MM1292, 1302
Outline
This IC is for protecting a lithium ion battery from overcharging, excess discharging, and overcurrent. If
abnormalities occur during charging and excess voltage is applied, it has a function that turns off the external
FET switch when voltage is applied to each battery beyond a specified time (overcharging detection). It also
has a function that turns off the external FET switch when the voltage for each battery falls below a set
voltage, to prevent excess discharge when discharging the battery (discharging detection). At that time, the IC
is switched to low current consumption mode. Also, when there is a large current flow due to shorting or other
reasons, there is a function for turning off the external FET switch (overcurrent detection).
These functions comprise a protection circuit, with few external parts, for lithium ion batteries.
Temperature conditions A: Ta=-25 ~ 75°C, B: Ta=-20 ~ 70°C, C: Ta=0 ~ 50°C,
D: Ta=0 ~ 40°C, E: Ta=-20 ~ 25°C
Series Table
Model
Overcharge
Overcharge
Overdischarge Overdischarge Overcurrent
Overcharge
detection voltage detection
detection
reset
detection
detection
temperature
hysteresis
voltage (V)
voltage (V)
voltage (mV)
voltage (V)
SOP-8D SOP-8C, 8E
conditions
voltage (V)
Package
CF
DF
HF
4.250±0.050
4.350±0.050
4.300±0.050
4.350±0.050
KF
LF
NF
AF
EF
FF
GF
4.250±0.050
4.250±0.050
4.350±0.050
4.250±0.050
4.100±0.050
4.350±0.050
4.215±0.035
B
B
B
B
B
B
B
B
D
E
D
2.30±0.10
3.00±0.10
220±20
200±60
200±60
220±50
220±50
220±50
220±60
220±60
2.40±0.10
2.40±0.10
2.05±0.10
2.05±0.10
2.40±0.10
2.40±0.10
2.20±0.10
2.30±0.10
2.40±0.10
3.00±0.10
3.00±0.10
3.00±0.10
3.00±0.10
3.00±0.10
3.00±0.10
3.00±0.10
3.00±0.10
3.00±0.10
150±20
150±20
170±15
170±12
150±15
100±10
100±10
220±20
150±15
MM1292
MF
MM1302
Features
1.
2.
3.
4.
5.
6.
7.
8.
Current consumption (during overcharging)
Current consumption (normal)
Current consumption (during excess discharging)
Current consumption (during excess discharging)
Overcharge detection voltage
Discharge resumption voltage
Reset after overcurrent detection
Operating limit voltage
V
CELL
=4.5V
80µA typ.
V
CELL
=3.5V
13µA typ.
V
CELL
=1.9V
0.5µA typ.
V
CELL
=1.0V
0.1µA max.
V
CELL
±50mV (detection for each cell)
3.0V±0.1V (detection for each cell)
load release
0.9V max.
Package
SOP-8C, SOP-8D, SOP-8E (MM1292 F)
The box represents the rank resulting from the combination of protection functions.
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