Camera Regulator - LG TU750 Service Manual

3. TECHNICAL BRIEF

3.2.4 Camera Regulator

MMP_CAM_PWR_EN enables 1.8V & 2.8V Camera Regulator for 5M Camera.
(2.8V for analog and AF, 1.8V for I/O, 1.5V for digital)
5M CAMERA POWER
MMP_CAM_PWREN
REV.1.1
Figure 3-2-5. 1.8V and 2.8V Camera Regulator
SUB PMIC gives power to VGA camera.
It controlled by I2C (VGA : 2.8V for analog, 1.8V for I/O, digital)
TU750 doesn't support the VGA. It's optional function
VDDE_1V8
APP_GP_SUBPM_RST
APP_GP_SUBPM_SDA
APP_GP_SUBPM_SCL
※ It doesn't use the VGA at TU750. There is the only optional circuit for VGA
LGE Internal Use Only
CAM_VDD_AF_2V8
VBAT
U401 RT9011-MGPQW
1 8
VIN VOUT1
2 7
EN1 VOUT2
3 6
EN2 NC2
4 5
NC1 GND
VBAT
10u
C501
B5
VBATCP
F4
VBAT1
E1
VBATLDO
C503 1u
A5
C3P
A4
C3N
C504 1u B6
C2P
C6
C2N
0.1u C506 1u C5 U502
C1P
D6
C1N
C505
BD6095GUL
E6
VIO
C4
RESETB
D4
SDA
D5
SCL
A3
CPGND
E5
SGND
B3
LEDGND
Figure 3-2-6. VGA Camera LDO in SUB PMIC
CAM_VDD_1V8
MMP_CAM_PWREN
C502
2.2u
B4
VOUT WLED_PWR
D2
LED1
C2
LED2
C1
LED3
B1
LED4
B2
LED5
A2
LEDFL
F5
SBIAS SBIAS
F3
SSENS SENS
E4
GC1 GAIN1
E3
GC2 GAIN2
F2
LDO1O
E2
LDO2O
D1 TP504
WPWMIN LCD_PWM
D3
C508
FLASHCNT
1u
- 50 - Copyright © 2008 LG Electronics. Inc. All right reserved.
VBAT CAM_AVDD_2V8
U402 R1114D281D-TR-F
1 3
VDD VOUT
4 2
NC GND1
6 5
CE GND2
WLED1
WLED2
WLED3
WLED4
WLED5
VGA Camera POWER
VGA Camera POWER
D501 RB521CS-30
VDD_VGA_2V8
D502
VDD_VGA_1V8
RB521CS-30
C509
1u
Only for training and service purposes