mm1414 Mitsumi Electronics, Corp., mm1414 Datasheet - Page 3

• Manufacturer Part Number: mm1414
• Description: Protection For Lithium-ion Batteries
• Manufacturer: Mitsumi Electronics, Corp.

MITSUMI
Pin Description
Pin No. Pin name
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
DCHG Output
GND
CON
CDC
COV
COL
N.C
N.C
N.C
SEL
N.C
N.C
N.C
V
OV
CS
V1
V2
V3
V4
CC
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
I/O
Overcharge detection output pin
NPNTr open collector output
Normal: high impedance
Overcharge: Low
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.
Discharge control FET (P-ch) drive pin
Normal: Low
Overdischarge: High
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.
GND pin
3 cell switch pin
Discharge FET ON/OFF pin
CON pin low; DCHG pin low (Normal mode)
CON pin high; DCHG pin high (Discharging prohibited)
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
Power supply input pin
Protection for Lithium-Ion Batteries (3-/4-serial cells) MM1414
SEL pin = GND: 3 cell (Connect V1 to GND)
SEL pin = V
CC
: 4 cell
Functions