Lcd Back-Light Illumination - LG KG225 Service Manual

3.13 LCD Back-light Illumination

LCD backlight LEDs is controlled by AD6720 via AAT3157, U404.
MLED
LCD_DIM_CTL
WHITE_LED LDO
VBAT
C419
C418
1u
1u
FB400
R412
20K
R499 C421
C450
100K
1u
NA
Figure 3-16. MAIN LCD BACKLIGHT ILLUMINATION
3. TECHNICAL BRIEF
U404 AAT3157ITP-T1
5 10
IN C1+
9
C1-
7
C2+
8
CP
6
C2-
11
EN_SET
1
D1
2
D2
3
D3
4 12
GND NC
- 35 -
C417
1u
C420
1u
MLED1
MLED2