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PDF MM1412 Data sheet ( Hoja de datos )
| Número de pieza | MM1412 | |
| Descripción | Protection of Lithium Ion Battery | |
| Fabricantes | Mitsumishi | |
| Logotipo |  |
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MITSUMI
Protection of Lithium-Ion Batteries MM1412
Protection of Lithium-Ion Batteries
Monolithic IC MM1412
Outline
This IC protects lithium ion batteries in the event of overcharge, overdischarge and overcurrent. It has the
following two functions: an overcurrent detection function that turns the external FET-SW off when a problem
occurs during charging, etc. and excess voltage is impressed on each battery for longer than a certain time,
and an overdischarge detection function that turns the external FET-SW off when battery voltage drops below
a certain voltage during discharge, in order to prevent battery overdischarge. When these functions operate,
the IC is put into low consumption current mode. It also has an overcurrent detection function that turns the
FET-SW off when excess current flows due to a short or the like.
Series Table
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
Model
MM1412
Package
SOP-8C, E VSOP-8A
Overcharge
detection
voltage (V)
Overcharge
detection voltage
temperature
conditions
Overcharge
detection
hysteresis
voltage (V)
Overdischarge Overdischarge
detection
reset
voltage (V) voltage (V)
AW 4.350±0.025
C
220±50
2.3±0.1
3.5±0.2
CW 4.295±0.025
C
2.3±0.1
3.5±0.2
EF EW 4.250±0.025
C
300±50
2.3±0.1
3.5±0.2
FW 4.250±0.025
C
220±50
2.0±0.1
3.1±0.2
www.DataSheet4U.comGW 4.300±0.025
HW 4.225±0.025
C
C
220±50
2.0±0.1
2.3±0.1
3.1±0.2
3.5±0.2
JW 4.250±0.025
C
150±50
4.5±0.2
KW 4.350±0.025
C
220±50
2.3±0.1
3.5±0.2
LW 4.125±0.025
C
2.3±0.1
3.5±0.2
MW 4.125±0.025
C
2.0±0.1
3.1±0.2
NW 4.190±0.025
C
2.0±0.1
3.1±0.2
PW 4.300±0.025
C
220±50
2.0±0.1
3.1±0.2
Overcurrent
detection
voltage (mV)
150±15
150±15
150±15
150±15
140±15
150±15
150±15
100±15
150±15
100±15
100±15
75±15
Features
1. Consumption current (during overcharge)
VCELL = 4.5 ROC = 270 kΩ
2. Consumption current (normal)
VCELL = 3.5V
3. Consumption current (during overdischarge) VCELL = 1.9V
4. Consumption current (during overdischarge) VCELL = 1.0V
5. Overcharge detection voltage (Ta = 0°C ~ 50°C)
6. Hysteresis voltage
7. Overdischarge detection voltage
8. Overdischarge release voltage
9. Overcurrent detection threshold
10. Reset after overcurrent detection
11. Operating limit voltage
150µA typ.
15µA typ.
0.5µA typ.
0.1µA max.
435 ± 25mV (detected for each cell)
220mV ± 50mV (detected for each cell)
2.30 ± 0.1V (detected for each cell)
3.50V ± 0.2V (detected for each cell)
150mV ± 15mV
Load open
0.9V max.
Package
VSOP-8A
SOP-8C
SOP-8E
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MITSUMI
Absolute Maximum Ratings
Item
Storage temperature
Operating temperature
Power supply voltage
OC pin impressed voltage
CS pin impressed voltage
Allowable loss
Protection of Lithium-Ion Batteries MM1412
Symbol
TSTG
TOPR
VCC max.
VOC max.
VCS max.
Pd
Ratings
-40~+125
-20~+70
-0.3~+18
-0.6~VCC
-0.6~VCC
300
Unit
°C
°C
V
V
V
mW
Recommended Operating Conditions
Item
Operating temperature
Operating power supply voltage
Symbol
TOPR
VOP
Ratings
-20~+70
+0.9~+18
Unit
°C
V
Electrical Characteristics (Except where noted otherwise, Ta=25°C) Models listed MM1412A
Item
Symbol
Measurement conditions
Min. Typ. Max. Unit
Overcharge detection voltage VOC
Ta=0°C~50°C
4.325 4.350 4.375 V
Overcharge detection hysteresis voltage
VOC
170 220 270 mV
Overdischarge detection voltage VOD
2.20 2.30 2.40 V
www.DataSheet4U.comConsumption current 1
IVH1
VH=VL=1.0V VCS=1.4V
0.1 µA
Consumption current 2
IVH2
VH=VL=1.9V VCS=3.2V
0.5 0.8 µA
Consumption current 3
IVH3
VH=VL=3.5V
15.0 20.0 µA
Consumption current 4
IVH4
VH=VL=4.5V, ROC=270kΩ
150 µA
VL pin input current
IVL
VH=VL=3.5V
-0.3 0 0.3 µA
Overdischarge release voltage VDF
Discharge resume by voltage rise
3.30 3.50 3.70 V
GD pin H output voltage
VGDH
VH=VL=3.5V, IL=-10µA
VH-0.3 VH-0.2
V
GD pin L output voltage
VGDL
VH=VL=3.5V, IL=10µA
0.2 0.3 V
OC pin output current
IOCH
VH=VL=4.5V
30 150
µA
Overcurrent detection threshold value VCS1
135 150 165 mV
Overcurrent short threshold value VCS2 When both battery pack pins are shorted 0.35 0.45 0.55 V
Overcurrent release
Load release: Load of 5MEGΩ or more between both battery pack pins
Overcurrent detection delay time 1 tOC1
7 12 18 ms
Overcurrent detection delay time 2
Overdischarge detection delay time
tOC2
tOD
*1 30 100 µs
8 13 20 ms
Overcharge detection dead time tOCH
CTC=0.18µF
0.5 1.0 1.5 s
Start-up voltage
VST
VH=VL=2.5V
-0.24 -0.12 -0.04 V
Note 1: Overcurrent short mode delay time (overcurrent delay time 2) is IC response speed.
In actual use, the time for discharging the discharge control FET gate capacity is added.
Also, when voltage change is large due to excess current, the IC internal bias current may turn off
temporarily, causing response time to lengthen. Select the time constant for the capacitor
connected to the power supply pin so that power supply fluctuation is more than 100µs/1V.
Note 2: Calculate overcharge dead time according to the following formula:
Overcharge detection dead time: tALM - 5.55 CTD[s]
[CTD: external capacitor, Unit:µF]
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MM1412.PDF ] | |
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