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3. TECHNICAL BRIEF
3.12 LCD Back-light Illumination
LCD backlight LEDs is controlled by AD6724(GPO_22) via AAT3155, U300.
MLED
LCD_BACKLIGHT_CTRL
LGE Internal Use Only
VBAT
C311
1u
FB300
R322
75K
C316
R323
1u
43K
Figure 3.12 MAIN LCD BACKLIGHT ILLUMINATION
CHARGE PUMP
U300
5
10
IN
C1+
8
9
OUTCP
C1-
7
C2+
11
EN_SET
6
C2-
3
D1
2
D2
1
D3
4
12
GND
D4
AAT3155ITP-T1
Copyright © 2008 LG Electronics. Inc. All right reserved.
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C312
1u
C314
1u
MLED1
MLED2
MLED3
MLED4
Only for training and service purposes
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