Power Block Diagram - LG SNC4R Service Manual

2. POWER BLOCK DIAGRAM

ADATOR
PVDD
(25 V)
DCDC 12 VA
[2A]
IC302
Switching
TR
P_CTRL
Switch
LDO
LDO
5.1 VA
DCDC DCDC
IC300
DCDC
P_CTRL
Switch
Switch
WL_P_CTRL_WF
Switch
WL_P_CTRL_RR
3-4
+12 V
Q301
USB_5 V
IC306
VCC_5 V
TUNNER_3.3 V
IC311
VD33ADAC
IC312
VD33AADC
1.35 V 1.3 VA
VD13ADC
IC303
VD33
3.3 VA
VD33PLL
IC301
VD33USB
VD33
3.3 VA
3.3 VA
VCC33
IC309
WL_3V3
IC310
RBOX_3V3
IC313
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Only for training and service purposes.
AMP
10 mA
500 mA
USB
200 mA LCD
50 mA
TUNER
10 mA
NC
350 mA
IC501
NC
Crescendo 3+
50 mA
10 mA
20 mA
100 mA
BT Module
10 mA
OPTICAL
20 mA
RCU, STB-LED
100 mA AMP,
Front LED*4ea
WIRELESS
100 mA
Module
WIRELESS
100mA
Module