MITSUBISHI(Dig.Ana.INTERFACE)
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
PRELIMINALY
PRELIMINALY
Notices;This is not a final specification.
Some parametric limits are subject to change.
( / 5 )
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
BLOCK DIAGRAM
GENERAL DESCRIPTION PIN CONFIGURATION(TOP VIEW)
Outline 14P2N-A
• 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
FEATURES
2.6V
3.0V
4.1V to 3.9V
OUT
VSENSE
OE
Fixed current
control circuit
OUT
ISENSE+
ISENSE-
OE
ISET
Std.
VOLTAGE
Current
detect
circuit
Vcc
OUT
SENSE-
TIN
GND
LED1
LED2
Vref
Incorrect
detect
prohibition
circuit
SENSE+
VSET
3.54V
APPLICATION
Lithium ion battery charger for digital equipment
VSENSE
C1
C2C3
VDD
1
2
3
4
5
6
7
14
13
12
11
10
9
8
C3
Vref
VDD
Vcc
LED1
LED2
TIN
SENSE+
SENSE -
VSENSE
GND
C2
C1
OUT
Fixed voltage
control circuit
Incorrect
detect
prohibition
circuit
Incorrect
detect
prohibition
circuit
1
M62253FP
VDD
R1
R2
VDD
R1
R2
1.64V
MITSUBISHI(Dig.Ana.INTERFACE)
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
PRELIMINALY
PRELIMINALY
Notices;This is not a final specification.
Some parametric limits are subject to change.
( / 5 )
Power supply
EXPLANATION OF TERMINALS
Pin
No. Symbol Function
1
2 C3 Setting delay time of temperature detection (Tpd=50ms at 0.1µF)
3Vref Reference voltage of internal circuit.
GND Ground
5 Vcc
6,7 LED1,2 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)
10
11 Battery voltage detection
12 Charging current detection
13
14 Output (open collector configuration)
Temperature detection (also using for battery connect detection)
4
9
8
TIN
VDD 5.0V reference voltage
C1
C2
VSENSE
SENSE-
SENSE+
OUT
Setting delay time of current detection (Tpd = 1.30sec at 2.2µF)
Charging current detection
2
MITSUBISHI(Dig.Ana.INTERFACE)
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
PRELIMINALY
PRELIMINALY
Notices;This is not a final specification.
Some parametric limits are subject to change.
( / 5 )
OUT pin saturation voltage
Symbol Parameter Test conditions Ratings Unit
Vcc Supply voltage 16
OUT pin output current
SENSE pin voltage
TIN pin voltage
Power dissipation
Thermal derating
Operating temperature
Storage temperature
30
Vcc
Vcc
450
4.5
-20 to +85
Ta = 25°C
Ta = 25°C
IOUT
VSENSE
TIN
Pd
Ktheata
Topr
Tstg
ELECTRICAL CHARACTERISTICS
Unit
Limit
TYP MAXMIN
Test conditionParameterSymbol
Block
Vcc Supply voltage range
Icc circuit current
LED
IoutLED1
IoutLED2 LED2 pin output current
TIN
VTHINTH1
IinTIN TIN pin input current
6.0 15 V
mA7
0.410
-1.0
1.0 V
ISET1
ISET2 Charge current set voltage 2
2.6V≤ battery voltage≤3.0V 250 mV
mV
ABSOLUTE MAXIMUM RATING
LED OFF
VTHINTL1 2.050
TIN pin low side threshold
voltage 1
mA
mA
10
10
VTHchgon Charge start voltage 2.6 V
VTHqchgon Fast charge start voltage 3.0 V
4.09 V
VTHqchgoff Const current charge
stop voltage
Vochg1
VTHrchgon Recharge start voltage 3.9 V
OUT
25
ITHchgoff Charge complete
detect voltage mV25
Const voltage charge time
IINSENSE+ µA
µA
IINSENSE- SENSE- pin input current
VOHLED1
VOHLED2 LED2 pin output "H"
voltage V
V
Vochg2 Output voltage set2 4.10
2.55 V
V
Charge time
Charge complete time
IOUT=20mAVOHOUT
ILOUT OUT pin leak current VC=15V 1.0 µA
(Ta=25°C unless otherwise noted)
(Vcc=8.5V,Vref=4.10V,VSENSE=3.6V,Ta=25°C, unless otherwise noted)
VDD VDD VDD pin output voltage 5.004.75 5.25
2.72.5
2.9 3.1
235
4.06
3.8
15
15
4.07
2.45
265
4.12
4.0
35
35
4.13
2.65
60 85
60 85
8
812
12
2.5
2.5
0.398 0.422
1.989 2.112 µA
VTHINTH2
VTHINTL2 TIN pin low side threshold
voltage 2 2.0
C1
C2
C3
tdC1 Recharge time@C1= 2.2µ F 1.52 s
Voltage detect delay time 1.200.88
tdBDET1 4.1V output time C2= 2.2µ F 1.63 s1.300.95
tdBDET2 2.55V output timeC2= 2.2µ F 152 ms
Connect detect time 2 12088
tdIDET C2= 2.2µF 1.65 s
Current detect delay time 1.300.95
tdILED C2= 2.2µF 3.2 s
LED switching delay time 2.51.8
tdchg C2= 2.2µF(After current detect) ms
Discharge time 9030
tdC3 C3= 0.1µF ms
Temperature
detect delay time 50
V
V
mA
V
V
mW
mW/°C
°C
°C-40 to +125
Voltage detect part
Current detect
part
Connect detect time 1
TIN pin up side threshold
voltage 2
TIN pin up side threshold
voltage 1
LED1 pin output "H"
voltage
LED1 pin output current
SENSE+ pin input current
Charge current set voltage 1
Output voltage set1
Charge complete time
3.0V≤ battery voltage≤4.1V
Charge time
Charge time
3
0.400
1.860
0.388 0.412
1.804 1.916
36 64
Resistance ratio(R1/R2)
*in the block diagram
Resistance ratio(R1/R2)
*in the block diagram
MITSUBISHI(Dig.Ana.INTERFACE)
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
PRELIMINALY
PRELIMINALY
Notices;This is not a final specification.
Some parametric limits are subject to change.
( / 5 )
0.55s
4.1V
2.55V
Charge start
Battery connection point
Voltage
Detection
(3) Timing of charging
4. Timing chart (a case of application's constants)
(1) Timing of battery connecting detection
3°C
45°C
42.5°C
Charge ON
OFF
50ms 50ms 50ms
(2) Timing of temperature detection
50ms
55ms
2.6V
4.1V
3.9V
3.0V
LED2 (green)
LED1 (red)
Charge
Constant current charge
25mA 250mA
Recharge
Charge
completion
Vo=4.1V Vo=2.3V
1.30S
0.55S
ON
OFF
ON
OFF
250mA
25mA
250mA
0
1.20S
1.30S
120mS
Output voltage
≈
Battery temperature
≈
Battery voltage
charge current
Constant
current charge Constant voltage
charge (Constant
current charge)
Current
Detection
Completion of battery
temperature detection
4
MITSUBISHI(Dig.Ana.INTERFACE)
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
PRELIMINALY
PRELIMINALY
Notices;This is not a final specification.
Some parametric limits are subject to change.
( / 5 )
5. APPLICATION EXAMPLE
To VDD pin
3.54V
1Ω
10KΩ
2.6V
3.0V
4.1V to 3.9V
5.0V
OUT
VSENSE
OE
current control
circuit
OUT
ISENSE+
ISENSE-
OE
ISET
Std voltage
Current
detect circuit
Vcc
OUT
SENSE-
TIN
GND
LED1
LED2
Vref
SENSE+
VSET
C1
C2C3
VDD
VSENSE
2.2µF
0.1µF 2.2µF
Incorrect
detect
prohibition
circuit
voltage control
circuit
Incorrect
detect
prohibition
circuit
Incorrect
detect
prohibition
circuit
Battery
5
VDD
R1
R2
R1
R2
1.64V
