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MITSUBISHI(Dig.Ana.INTERFACE)
M62253FP
LITHIUM ION BATTERY CHARGER CONTROL IC
4. Timing chart (a case of application's constants)
(1) Timing of battery connecting detection
Battery connection point
4.1V
50ms
2.55V
≈
0.55s
Voltage
Detection
Current
Detection
55ms
Charge start
(2) Timing of temperature detection
45°C
42.5°C
≈
3°C
50ms
ON
Charge OFF
50ms
50ms
(3) Timing of charging
4.1V
3.9V
3.0V
2.6V
Completion of battery
temperature detection
1.30S
250mA
25mA
0
Charge
ON
LED1 (red) OFF
ON
LED2 (green)
OFF
0.55S
Constant current charge Constant
Constant voltage
current charge charge
120mS
25mA
250mA
Vo=4.1V
Charge
completion
Vo=2.3V
Recharge
(Constant
current charge)
250mA
1.30S
1.20S
(4/5)