Mitsubishi M62253FP Lithium ion battery charger control ic Datasheet

MITSUBISHI(Dig.Ana.INTERFACE)
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LITHIUM ION BATTERY CHARGER CONTROL IC
GENERAL DESCRIPTION
PIN CONFIGURATION(TOP VIEW)
TIN 1
14 OUT
C3 2
13 SENSE+
M62253FP
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
Vref 3
VDD 4
Vcc
5
LED1 6
FEATURES
12 SENSE 11 VSENSE
10 GND
LED2 7
• 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
9
C2
8
C1
Outline 14P2N-A
APPLICATION
Lithium ion battery charger for digital equipment
BLOCK DIAGRAM
Vref
VDD
C1
Vcc
Std.
VOLTAGE
OE
4.1V to 3.9V
OUT
OUT
Fixed current
control circuit
Incorrect
detect
prohibition
circuit
ISET
OE
3.0V
ISENSE+
ISENSE-
SENSE+
OUT
Fixed voltage
control circuit
VSET
2.6V
SENSE-
VSENSE
VSENSE
Incorrect
detect
prohibition
circuit
LED2
VDD
Current
detect
circuit
R1
1.64V
Incorrect
detect
prohibition
circuit
LED1
TIN
VDD
R1
3.54V
R2
C3
GND
(1/5)
R2
C2
MITSUBISHI(Dig.Ana.INTERFACE)
.
ALY
ation
N
nge.
I
ecific ct to cha
M
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P R E is not a its are s
his tric lim
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Notic e param
Som
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
EXPLANATION OF TERMINALS
Pin
No.
Symbol
1
TIN
Temperature detection (also using for battery connect detection)
2
C3
Setting delay time of temperature detection (Tpd=50ms at 0.1µF)
3
Vref
Reference voltage of internal circuit.
4
VDD
5.0V reference voltage
5
Vcc
Power supply
6,7
LED1,2
8
C1
Setting delay time of voltage detection (Tpd = 1.20sec at 2.2µF)
9
C2
Setting delay time of current detection (Tpd = 1.30sec at 2.2µF)
10
GND
Function
LED connection (LED1 is on during charging, LED2 is on at charge
completion.)
Ground
11
VSENSE Battery voltage detection
12
SENSE-
Charging current detection
13
SENSE+
Charging current detection
14
OUT
Output (open collector configuration)
(2/5)
MITSUBISHI(Dig.Ana.INTERFACE)
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ation
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nge.
I
ecific ct to cha
M
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L
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P R E is not a its are s
his tric lim
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Notic e param
Som
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
ABSOLUTE MAXIMUM RATING
Symbol
Vcc
IOUT
VSENSE
TIN
Pd
Ktheata
Topr
Tstg
Parameter
OUT pin output current
SENSE pin voltage
TIN pin voltage
Power dissipation
Ta = 25°C
Thermal derating
Ta = 25°C
Operating temperature
Storage temperature
Block
Symbol
Current detect
part
Voltage detect part
Vcc
Icc
VDD VDD
TIN
OUT
C1
C2
VTHchgon
VTHqchgon
VTHqchgoff
Vochg1
Vochg2
VTHrchgon
ISET1
ISET2
ITHchgoff
IINSENSE+
IINSENSEIoutLED1
IoutLED2
VOHLED1
VOHLED2
VTHINTH1
VTHINTL1
IinTIN
VTHINTH2
VTHINTL2
VOHOUT
ILOUT
tdC1
tdBDET1
tdBDET2
tdIDET
tdILED
tdchg
C3 tdC3
Test conditions
Supply voltage
ELECTRICAL CHARACTERISTICS
LED
(Ta=25°C unless otherwise noted)
Parameter
Unit
16
30
Vcc
Vcc
450
4.5
-20 to +85
-40 to +125
V
mA
V
V
mW
mW/°C
°C
°C
(Vcc=8.5V,Vref=4.10V,VSENSE=3.6V,Ta=25°C, unless otherwise noted)
Test condition
Limit
MIN
LED OFF
4.75
2.5
Fast charge start voltage
2.9
Const current charge
4.06
stop voltage
Output voltage set1 Charge time
4.07
Output voltage set2 Charge complete time
2.45
Recharge start voltage Charge complete time
3.8
Charge current set voltage 1 2.6V≤ battery voltage≤3.0V
15
Charge current set voltage 2 3.0V≤ battery voltage≤4.1V
235
Charge complete
Const voltage charge time
15
detect voltage
VDD pin output voltage
Charge start voltage
SENSE+ pin input current
SENSE- pin input current
Charge time
Charge time
8
8
LED1 pin output current
LED2 pin output current
LED1 pin output "H"
voltage
LED2 pin output "H"
voltage
TIN pin up side threshold
voltage 1
TIN pin low side threshold
voltage 1
Resistance ratio(R1/R2)
*in the block diagram
OUT pin leak current
Resistance ratio(R1/R2)
*in the block diagram
IOUT=20mA
VC=15V
Voltage detect delay time Recharge time@C1= 2.2µ F
Connect detect time 1 4.1V output time C2= 2.2µ F
Connect detect time 2 2.55V output timeC2= 2.2µ F
Discharge time
C2= 2.2µF
C2= 2.2µF
C2= 2.2µF(After current detect)
Temperature
detect delay time
C3= 0.1µF
Current detect delay time
LED switching delay time
MAX
15
7
5.00
2.6
3.0
4.09
4.10
2.55
3.9
25
250
25
60
60
10
10
5.25
2.7
3.1
4.12
4.13
2.65
4.0
35
265
35
85
85
12
12
2.5
2.5
(3/5)
Unit
V
mA
V
V
V
V
V
V
V
mV
mV
mV
µA
µA
mA
mA
V
V
0.398 0.410 0.422
1.989 2.050 2.112
-1.0
TIN pin input current
TIN pin up side threshold
voltage 2
TIN pin low side threshold
voltage 2
OUT pin saturation voltage
TYP
6.0
Supply voltage range
circuit current
Ratings
µA
0.388 0.400 0.412
1.804 1.860 1.916
1.0
0.88 1.20
0.95 1.30
88 120
0.95 1.30
1.8 2.5
30
90
36
50
2.0
V
1.0 µA
1.52
s
1.63
s
152 ms
1.65
s
3.2
s
ms
64 ms
MITSUBISHI(Dig.Ana.INTERFACE)
.
ALY
ation
N
nge.
I
ecific ct to cha
M
p
s
I
l
L
fina
ubje
P R E is not a its are s
M62253FP
his tric lim
es;T
e
Notic e param
Som
LITHIUM ION BATTERY CHARGER CONTROL IC
4. Timing chart (a case of application's constants)
(2) Timing of temperature detection
(1) Timing of battery connecting detection
4.1V
2.55V
Battery temperature
Output voltage
Battery connection point
50ms
0.55s
≈
Voltage
Detection
55ms
Current
Detection
45°C
42.5°C
≈
3°C
Charge
50ms
50ms
50ms
ON
OFF
Charge start
(3) Timing of charging
Battery voltage
4.1V
3.9V
3.0V
0.55S
2.6V
Completion of battery
temperature detection
Constant current charge Constant
Constant voltage
current charge charge
Charge
completion
1.30S
charge current
120mS
25mA
250mA
250mA
Vo=4.1V
Vo=2.3V
1.30S
25mA
0
1.20S
Charge
LED1 (red)
LED2 (green)
ON
OFF
ON
OFF
(4/5)
Recharge
(Constant
current charge)
250mA
MITSUBISHI(Dig.Ana.INTERFACE)
.
ALY
ation
N
nge.
I
ecific ct to cha
M
p
s
I
l
L
fina
ubje
P R E is not a its are s
M62253FP
his tric lim
es;T
e
Notic e param
Som
LITHIUM ION BATTERY CHARGER CONTROL IC
5. APPLICATION EXAMPLE
2.2µF
VDD C1
Vref
Vcc
Std voltage
5.0V
4.1V to 3.9V
OE
OUT
OUT
current control
circuit
Incorrect
detect
prohibition
circuit
ISET
ISENSE+
ISENSE-
SENSE+
OUT
OE
SENSE-
voltage control
circuit
VSET
2.6V
Incorrect
detect
prohibition
circuit
LED2
LED1
To VDD pin
Current
detect circuit
Incorrect
detect
prohibition
circuit
R1
1.64V
R2
VDD
R1
3.54V
GND
C3
C2
2.2µF
0.1µF
(5/5)
1Ω
VSENSE
VSENSE
R2
10KΩ
TIN
Battery
3.0V
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