LG SN4A - Power Block Diagram

3-4
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Only for training and service purposes.
DCDC
MP9442
[2A]
25VA 12VA
POWER
Adapter
(25V)
AMP (TAS5612*2)
1.5V
MPEG
(MT8502)
Bluetooth (CSR8510)
WLS_3V3
3.3VA
DCDC
MP9453
[3A]
DCDC
SY8089A
Switching TR
12V
1.5V
5.1VA
3.3VA
200mA
PWM (PS9860)
20mA 65mA
USB, LCD,ADC
1000mA USB_5V
Switch
SY6288C3
5V
MICOM
MSP430F5326
1.2V 1.2V
D_3.3V
80mA
12V
3.3VA
WL_WF_CTRL
1000mA
D33_CTRL
DCDC
SY8089A
Switch
SY6288C3
DDR3
ADC (PCM1808)
DCDC_12_15_CTRL
90mA
60mA
VCC_5V
12VA
3.3VA
RCU
OPTICAL
10mA 10mA
3.3VA
WIRELESS, Woofer ( 5G)
25mA
3.3VA
Switch
SY6288C3
HDMI_5.1V
PWR_CTRL
RBOX_3V3
65mA
LDO or
Switch
DCDC
Control VCC CTRL Signal
100mA 20mA
WIRELESS, Rear (5G)
Switch
SY6288C3
WL_RBOX_CTRL
HDMI
18 mA
Switch
SY6288C3
PWR_GD
PWR_CTRL
DCDC
SY8089A
25V (Alive) 12V (Alive) 5.1V (Alive)
10mA
Tuner option
TUNER(Si4705)
T
U
N
E
R
(
S
i
4
7
05
)
40mA
LDO
LR1148G
TUNER_3.3V
2. POWER BLOCK DIAGRAM