Circuit Descriptions
7.
Figure 7-9 DC/DC converters ( for 20" & 22" & 24" & 40/42/47PFL3188H/12 & 47PFL3198H/12)
19530_206_130812.eps
130812
Q750
AON4421
AMP STA381BWTR
Q757
PANEL_VCC
PVDD
12V
12V
5V-STB
PWR_12V/5V
C
A
B
<1.7A
<10mA
1mA
<1820mA
<290 mA
<370 mA
<210 mA
<210 mA
<230 mA
?
<430 mA
+5V_SW
<2.5A
=
?
=
?
=
=
?
POWER SWITCH
AON4421
Q757
500 mA
NAND FLASH
K9F1G08U0D
-SIB0
MAIN CHIP
NT72567BG
+5V_STB
PWR_12V
PWR_12V_AUD
AUDIO AMP
STA381BWTR
AON4421
Q750
POWER SWITCH
PANEL_VCC_ON/OFF
PANEL_T-CON
PANEL_22"
~55"
BUCK CONVERTER
RT8079ZQW
U701
DV11
PWR_ON
MAIN CHIP
NT72567BG
DV33SB
LDO
AP2125N_0.3A
U704
POWER SWITCH
AON4421
Q701
PWR_ON
+5V or +12V
PVDD
+5V_STB
+5V_STB
+5V_STB
+5V_STB
PWR_12V
POWER protect
G5250M1T1U
U102
USB PWR
USB multi-media
LDO
G1117_1A
U101_SOT-223
SILICON TUNER
ST03CS-2-E
+5V_TUNER
+5V_SW
+5V_SW
LDO
G1117_1A
U702_SOT-223
+5V_SW
PCMCIA CARD
CI CARD PWR
VCC_CI
+5V_SW
CI_PWR_EN
NT72567BG
MAIN CHIP
BUCK CONVERTER
AP3417C_1.2A
U703_SOT_23_5
DV15
DV33
MAIN CHIP
NT72567BG
K4B2G1646E
-BCH9
DDRIII
DV15
LDO
G1117_1A
U705_SOT-223
+5V_SW
MAIN CHIP
NT72568
Depend on panel
AV25