Charging Trouble - LG L1150 Service Manual

4.4. Charging Trouble

• Charging method : CC-CV
• Charger detect voltage : 4.0V
• Charging time : 3h
• Icon stop current : 80mA
• Charging current : 450mA
• CV voltage : 4.2V
• Cutoff current : 60mA
• Low battery alarm
• Idle : 3.50V
• Dedicated : 3.59V
• Switch-off voltage : 3.35V
• Charging temperature ADC range
• ~ -5°C : low charging voltage operation (3.6V ~ 3.9V)
• -5°C ~ 50°C : standard charging (up to 4.2V)
• 50°C ~ : low charging voltage operation (3.6V ~ 3.9V)
4.2V ~ 3.89V
VCHG
GND
TA
3.89V ~ 3.75V
Block Diagram
Charging Current
FB501
FB502
VCHG
IOTA
U101
VBATS
CN803
PBA
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4. TROUBLE SHOOTING
3.75V ~ 3.68V
U502
ICTL
R507
PCHG
D501
VCCS
R509
VBAT
C509
3.68V ~ 3.59V
Battery