LG C1150 Service Manual page 47

3. TECHNICAL BRIEF
3.15 LCD Back-light Illumination
In LCD Back-light illumination, there is an charge pump driver in main PCB, which is
controlled by LCD_DIM line from AD6525.
VBAT
U203
10
IN
C211 C212
18p 1u
2
OUT
1u
C215
9
LCD_DIM EN_SET
11
GND
Figure 3-29. MAIN LCD BACKLIGHT ILLUMINATION
4
C1+
C213
1u
3
C1-
1
C2+
LCD BACKLIGHT LED
C214
1u
12
FB1
C2-
8
D1
7
D2
6
C216 C217
D3
5 39p
D4
AAT3123ITP-20-T1
- 48 -
LCD MODULE
VA207
18p