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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
[Figure 3.3.2-1] Block diagram of Charging IC
[Table 3.3.2-1] PIN description of Charging IC
NAME
PIN
TYPE
DESCRIPTION
VDC
1
AI
Input pin from car adapter or AC/DC adapter
VUSB
2
AI
Input pin from USB host device
VDC_LDO
12
AO
Output pin of Linear Regulator
USB_SYP
10
AO
Output pin from USB bypass circuitry
IVDC
9
AI
Battery current setting pin for adapter power
IUSB
7
AI
Current setting pin for USB power
IMIN
6
AI
End-of-charge current setting pin
BAT
11
AO
Output pin to battery
EN
5
DI
Active low charge enable pin
PPR
3
OD
Active low power present indicator pin
CIIC
4
OD
Active low charging indication pin
GND
8
G
Ground pad
Содержание KP275
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