Key Backlight; White/Flash Led Ldo - LG KG320 Service Manual

3. TECHNICAL BRIEF

3.16 KEY BACKLIGHT

3.17 WHITE/FLASH LED LDO

FLASH LED & LCD Backlight
VBAT
L101
1uH
C127
2.2u
R111
C_FLASH
1.5K
LCD_DIM_CTRL
R112
R113
100K 7.5K
Key Backlight
R318
KEY_BACKLIGHT
12K
Figure 3-30. MAIN KEY BACKLIGHT
FB102
4 3
VIN VOUT_FL
FB103
13
VOUT_BL
9
GND U104
17 8
PGND NC
16 5
EN_FLSH ISINK1
6
ISINK2
10 7
EN_SET ISINK3
C128 C129
AAT2807AIXN-4.5
1u 1u
Figure 3-32. WHITE/FLASH LED LDO
Q300
2SC5663
R319
12K
CAMERA FLASH LED
FLASH_LED
R110
FLASH_LED
22
MLED
MLED1
MLED2
MLED3
- 52 -
KEY_LIGHT
LD201
R213
10
(2010)