LG LG-A270 - Battery Information and Care

3. TECHNICAL BRIEF
- 31 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Copyright © 2012 LG Electronics. Inc. All right reserved.
O nly for training and service purposes
LGE Internal Use Only
28
3. TECHNICAL BRIEF
Current sink for LCM backlight LED
- Max. 4 current sink
- No external component required
- Current balance between channels
-- Individual channel current / enable control
-- HW dimming control by
3.8.2 LCD Backlight Interface
Figure 3.8.2. RT8966 Block Diagram
3.8.2 LCD Backlight Interface
J2
J3
K2
K3
ISINK0
ISINK1
ISINK2
ISINK3
M_KEY_LED1
LCD_BL_1
M_KEY_LED2
CN400
14
12
11
10
9
8
7
6
5
4
3
2
1
13
C403
27p
C402
27p
VBAT
100ohmsR496
C401
27p
C404
27p
R499 100ohms
R498 100ohms
R495 100ohms
C405
27p
VIO28
C400
1u
100ohmsR497
R1 120K
LSA0
LSCE0B_R
LSDA_R
LSCK
LRSTB_R
LCD_MAKER_ID
LCD_BL_1