Mitsubishi M62253FP Datasheet
MITSUBISHI(Dig.Ana.INTERFACE)
PRELIMINALY
PRELIMINALY
Notices;This is not a final specification.
Some parametric limits are subject to change.
LITHIUM ION BATTERY CHARGER CONTROL IC
GENERAL DESCRIPTION
The M62253FP is a charge controller designed for charging
lithium ion batteries.
The IC has a current and voltage control circuit allowing the
constant current/voltage charging to lithium ion batteries.
A charger system for lithium ion batteries can be easily designed
by utilizing the IC`s following functions ;
• charge disabling function for an over discharged battery
• charge control function by detecting the battery temperature
FEATURES
• Constant current and voltage charging
• Charge disabling functions for an over discharged battery
and a high/low temperature battery
• Recharging function
• 2 LED driving circuits to Indicate charging conditions
• Delay circuit to prevent chattering
M62253FP
PIN CONFIGURATION(TOP VIEW)
TIN
C3
Vref
VDD
Vcc
LED1
LED2
1
2
3
4
5
6
M62253FP
7
Outline 14P2N-A
14
13
12
11
10
9
8
OUT
SENSE+
SENSE VSENSE
GND
C2
C1
APPLICATION
Lithium ion battery charger for digital equipment
BLOCK DIAGRAM
Vref
3.0V
2.6V
VDD
Std.
VOLTAGE
4.1V to 3.9V
Incorrect
detect
prohibition
circuit
LED2
LED1
C1
Incorrect
detect
prohibition
circuit
Incorrect
detect
prohibition
circuit
Vcc
OE
Fixed current
control circuit
ISET
OE
Fixed voltage
control circuit
VSET
OUT
ISENSE+
ISENSE-
OUT
VSENSE
Current
detect
circuit
1.64V
VDD
R1
3.54V
R2
OUT
SENSE+
SENSE-
VSENSE
VDD
R1
R2
TIN
GND
( / 5 )
1
C2C3
MITSUBISHI(Dig.Ana.INTERFACE)
PRELIMINALY
PRELIMINALY
Notices;This is not a final specification.
Some parametric limits are subject to change.
EXPLANATION OF TERMINALS
Pin
No.
Symbol
1
TIN
2 C3
3
4
Vref
VDD
Temperature detection (also using for battery connect detection)
Setting delay time of temperature detection (Tpd=50ms at 0.1µF)
Reference voltage of internal circuit.
5.0V reference voltage
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
Function
5 Vcc
6,7
8
9
10
11
12
13
14
LED1,2
C1
C2
GND
VSENSE
SENSE-
SENSE+
OUT
Power supply
LED connection (LED1 is on during charging, LED2 is on at charge
completion.)
Setting delay time of voltage detection (Tpd = 1.20sec at 2.2µF)
Setting delay time of current detection (Tpd = 1.30sec at 2.2µF)
Ground
Battery voltage detection
Charging current detection
Charging current detection
Output (open collector configuration)
( / 5 )
2
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