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3. TECHNICAL BRIEF
3.13 Battery Charger Interface
From External Source
(Wall Adaptor or Computer)
(GPIO_037)
USB_DET
(GPIO_059)
CHG_EN
The ISL6299 is a fully integrated low-cost single-cell Li-ion or Li-polymer battery charger. The charger
accepts two power inputs, normally one from a USB port and the Other from a desktop cradle. The
ISL6299 is an ideal charger for smart handheld devices that need to communicate with a personal
computer via USB.
The ISL6299 features 28V and 7V maximum voltages for the cradle and the USB inputs respectively.
Due to the 28V rating for the cradle input, low-cost, large output tolerance adapters can be used
safely. When both inputs are powered, the cradle input is used to charge the battery.
LGE Internal Use Only
CHG_ABB
VUSBIN
R210
10K
R214
R216
R212
100K
10K
100K
Figure 3-13 BATTERY CHARGER BLOCK
- 46 -
U203
ISL6299
1
10
CRDL
BAT
2
USB
6
3
IMIN
_PPR
4
_CHG
9
ICDL
7
8
USBON
GND
5
11
_EN
PGND
R213
36K
(1%)
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
VBAT
C215
1u
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