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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
Trickle Charging
Trickle Charging of the main battery, enabled through SBI control and powered from V
DD
, is provided
by the PM7540 IC, The trickle charger is on-chip programmable current source that supplies current
from V
DD
to pin (VBAT). Trickle charging can be used for lithium-ion and nickel-based batteries, with
its performance specified below (3.2V). The charging current is set to 80mA.
Parameter
Min
Typ
Max
Unit
Trickle Current
60
80
100
mA
3. Technical Brief
PM7540
Input Power
Management
Содержание GD88O
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