Trickle Charging
Trickle Charging of the main battery, enabled through SBI control and powered from VDD, is provided
by the PM7540 IC, The trickle charger is on-chip programmable current source that supplies current
from VDD to pin (VBAT). Trickle charging can be used for lithium-ion and nickelbased batteries, with
its performance specified below (3.2V). The charging current is set to 80mA.
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
- 40 -
mA
100
80
60
Trickle Current
Unit
Max
Typ
Min
Parameter
PM7540
Input Power
Managemen
t
Summary of Contents for CT815
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