LG SJ4Y-S - Power Block Diagram

3-4
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Only for training and service purposes.
DCDC
[2 A]
PVDD
12 VA
SMPS
(24.5 V)
AMP
1.2 V
DSP
WIRELESS
Module
WLS_3.3 V
3.3 VA
BT Module
RCU
OPTICAL
DCDC
DCDC
Switching
TR
12 V
1.2 V
5.1 VA
3.3 VA
1000mA
100mA
PWMSwitch
WL_CTRL
P_CTRL
P_CTRL
P_CTRL
10mA
100mA 10mA 10mA 100mA 100mA
PWM_3.3 V
USB, LCD
1100mA
VCC_5 V
Switch
3.3 VA 3.3 VA
Ctrl_VCC
Alive VCC
LDO or Switch
DCDC
DCDC
5 V
MICOM
1.5 V 1.5 V
Switch
D_3.3 V
100mA
20mA
100mA
12 V
3.3 VA
3.3 VA
Switch
WL_CTRL
350mA
DSP, DDR
D33_CTRL
2. POWER BLOCK DIAGRAM