LG SKC9 - Power Block Diagram

3-4
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
DCDC
12VA→ D_1.2V
For MPEG
WIFI Module
Wireless
BT Module
LCD
Remocon
Module
DSP
DDR3
Serial Flash
128Mbit
DAC
Line Driver x 3
MPEG
MT8506
DDR3 X 1 (1GBit)
NAND FLASH
MICOM
3.3VA
Serial Flash
3.3VA 3.3VA
D_3.3V
1.2V
D_1.5V D_1.5V D_3.3V
DSP_1.1V DSP_1.5V DSP_3.3V DSP_1.5V DSP_3.3V
DAC_1.2V DAC_3.3V DAC_3.3V
AMP IC
TAS3118 x 4
25VA
HDMI 4K
HDMI_5.1VA
HD_1.0V HD_3.3V
ADC
DIR
VCC_5V
D_3.3V D_3.3V
OPTICAL
PORTABLE
HDMI IN
HDMI OUT
3.3VA
VCC_5V
DCDC
12 VA→ 5.1VA
12 VA
DCDC
25VA→ 12VA
SW
SMPS
FRONT PCB
JACK PCB
LDO
5.1 VA
→ DAC_3.3V
LDO
DAC_3.3V
→ DAC_1.2V
LDO
5.1 VA
→ 3.3VA
DSP_3.3V
SW
D_3.3V
SW
WL_3.3V
SW
LDO
5.1 VA
→ 3.5V
LDO
5.1 VA
→ D_1.5V
LDO
5.1 VA
→ DSP_1.5V
LDO
5.1 VA
→ DSP_1.1V
DCDC
5.1VA→HD_1.0V
USB
JACK
SW
HD_3.3V
SW
Rear
Rear_3.3V
SW
Buzzer
2. POWER BLOCK DIAGRAM