Only For Training And Service Purposes - LG KP330 Service Manual

3. TECHNICAL BRIEF
3.9.5 Constant Current Charging
The PM6658 IC supports constant current charging of the main battery by closing the
battery MOSFET (connecting the battery to VDD), and closed-loop controlling the
pass transistor. The constant current charging continues until the battery reaches its
target voltage, 4.185V.
3.9.6 Constant Voltage Charging
Constant voltage charging begins when the battery voltage reaches a target voltage,
4.185V.
The end of constant voltage charging is commonly detected 10% of the full charging current
• Charging Method : CC & CV (Constant Current & Constant Voltage)
• Maximum Charging Voltage : 4.2V
• Maximum Charging Current : 600mA
• Nominal Battery Capacity : 900 mAh
• Charger Voltage : 4.6V
• Charging time : Max 3h (Except time trickle charging)
• Low battery POP UP : 3.42V
• Low battery alarm interval : standby - 3 min, talk – 1min
• Cut-off voltage : 3.15V
LGE Internal Use Only
KP330 Operational Description
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Only for training and service purposes