MM1412 查看數據表（PDF） - Mitsumi
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MM1412 Datasheet PDF : 9 Pages
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MITSUMI
Protection of Lithium Ion Batteries MM1414
Pin Description
Pin No. Pin name I/O
1
OV Output
2
N.C
3
CS Input
4
N.C
5 DCHG Output
6
N.C
7
CDC Input
8
COL Input
9
COV Input
10 GND Input
11 SEL Input
12
N.C
13 CON Input
14
N.C
15
V1 Input
16
V2 Input
17
V3 Input
18
V4 Input
19
N.C
20
VCC Input
Functions
Overcharge detection output pin
NPNTr open collector output
Normal: high impedance
Overcharge: Low
Not connected
Overcurrent detection pin
Monitors load current equivalently by the voltage drop between discharge control
FET source and drain, and makes DCHG pin high when the voltage goes below
overcurrent detection voltage, turning off discharge control FET. After
overcurrent detection, current flows from this pin and when there is a light load,
overcurrent mode is released. This function does not operate in overdischarge mode.
Not connected
Discharge control FET (P-ch) drive pin
Normal: Low
Overdischarge: High
Not connected
Overdischarge detection dead time setting pin
Dead time can be set by connecting a capacitor between CDC pin and ground.
Overcurrent detection dead time setting pin
Dead time can be set by connecting a capacitor between COL pin and ground.
Overcharge detection dead time setting pin
Dead time can be set by connecting a capacitor between COV pin and ground.
Ground pin
3 cell switch pin SEL pin = GND: 3 cell (Connect V1 to GND)
SEL pin = VCC: 4 cell
Not connected
Discharge FET ON/OFF pin
CON pin low; DCHG pin low (Normal mode)
CON pin high; DCHG pin high (Discharging prohibited)
Not connected
V1 cell high side voltage input pin
V2 cell high side voltage and V3 cell low side voltage input pin
V3 cell high side voltage and V4 cell low side voltage input pin
V4 cell high side voltage input pin
Not connected
Power supply input pin
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