LG KS20 Operating Instructions Manual page 43

Trickle Charging
Trickle Charging of the main battery, enabled through SBI control and powered from V
the PM7540 IC, The trickle charger is on-chip programmable current source that supplies current from
V to pin (VBAT). Trickle charging can be used for lithium-ion and nickelbased batteries, with its
DD
performance specified below (3.2V). The charging current is set to 80mA.
Parameter
Trickle Current
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Only for training and service purposes
Min Typ
60 80
- 45 -
3. TECHNICAL BRIEF
Max
100
PM7540
Input Power
Managemen
t
is provided by
DD,
Unit
mA
LGE Internal Use Only