LG 32LD400_LC320WUG-SCR7 Service Manual page 124

5
(1,3,4,5,7,10,14) +5VSB
D
+5VSB CORE POWER DV10
C44 C44 C47 C47
C
10uF/25V 10uF/25V 0.1uF/16V 0.1uF/16V
1206C 1206C
High = > +5V POWER ON
Low = > +5V POWER OFF
R318 R318 470 470
(8) OPWRSB
B
+5VSB
CORE POWER DV33
R56 R56
10 10
1
2
C45 C45 C48 C48
3
10uF/25V 10uF/25V 0.1uF/16V 0.1uF/16V
4
1206C 1206C C83 C83 C85 C85
0.1uF/16V 0.1uF/16V
0.1uF/16V 0.1uF/16V
A
0.8 x (1+3.16K/1K) = 3.328V
5
4
1.25 x (1+180/110) = 3.3V
U4 AP1117EL-13 U4 AP1117EL-13
+5VSB
4
ADJ ADJ
3 2
IN IN OUT OUT
SOT223 SOT223
C116 C116 GND GND
0.1uF/16V 0.1uF/16V
L21 L21
0 0 0805R 0805R
R55 R55 R64 R64
10 10 U6 U6 20K 20K
G5626P11U G5626P11U
1 8
VCC VIN
2 7
REF LX
3 6
GND PGND
4 5
FB EN
C80 C80 C82 C82
0.1uF/16V 0.1uF/16V
0.1uF/16V 0.1uF/16V C81 C81
1uF/25V 1uF/25V
0603C 0603C
0.8 x (1+1.21K/3.01K) = 1.122V
EN10
EN10
R319 R319
NC/20K NC/20K
VCCK
R323 R323 1K 1K
R325 R325
10K 10K
R65 R65
U9 U9 20K 20K
G5626P11U G5626P11U
L43 L43 4.7uH_3.8A 4.7uH_3.8A
8
VCC VIN
7
REF LX
6
GND PGND
5
FB EN
C74 C74
C84 C84 3V3_EN
0.1uF/16V 0.1uF/16V
1uF/25V 1uF/25V 0603C 0603C
4
3
R30 R30 + + CE10 CE10
110_F 110_F C377 C377 0805C 0805C C101 C101
100uF/16V 100uF/16V NC/4.7uF/10V/0805 NC/4.7uF/10V/0805 NC/0.1uF/16V NC/0.1uF/16V
R32 R32
180_F 180_F
1.25 x (1+180/110) = 3.3V
C118 C118
NC NC
L42 L42 4.7uH_3.8A 4.7uH_3.8A
R36 R36 + +
C73 C73 1K21_F 1K21_F
EN10
0.1uF/16V 0.1uF/16V
EN10
R37 R37
3K01_F 3K01_F
+5VSB
R326 R326
10K 10K 3V3_EN
EN: H level at least 2V
470 470 R324 R324 Q47 Q47
2
KN3904S KN3904S
Q46 Q46
2
KN3904S KN3904S
DV33 (3,4,7,8,14)
DV33
FB14 FB14
60ohm/3A 60ohm/3A
0603L 0603L
R42 R42 CE18 CE18
+ +
3K16_F 3K16_F C77 C77
470uF/25V 470uF/25V 1.0uF/25V 1.0uF/25V
0603C 0603C
R43 R43 Low ESR
1K_F 1K_F
<125 mOHM
3
2
+3V3SB
+3V3SB (7,8,13)
BOM
VCCK
VCCK (8)
CE15 CE15
C76 C76
470uF/25V 470uF/25V 1.0uF/25V 1.0uF/25V
0603C 0603C
Low ESR
<125 mOHM
AV33
AV33 (3,4,8,12)
APPROVED BY: APPROVED BY: APPROVED BY:
C553 C553
1.0uF/25V 1.0uF/25V
0603C 0603C
CHECKED BY: CHECKED BY: CHECKED BY:
DESIGN BY: DESIGN BY: DESIGN BY:
PCB P/ N: PCB P/ N: PCB P/ N:
ECN NO: ECN NO: ECN NO:
SCH FILE : SCH FILE : SCH FILE :
PCB FILE : PCB FILE : PCB FILE :
2
1
TECHNOLOGY TECHNOLOGY TECHNOLOGY
MODEL MODEL MODEL MT5387_LGE_32/42LD400 MT5387_LGE_32/42LD400 MT5387_LGE_32/42LD400
(3632-1442-0150) (3632-1442-0150) (3632-1442-0150)
(3642-1112-0150) (3642-1112-0150) (3642-1112-0150)
CIRCUITY CIRCUITY CIRCUITY DIGITAL POWER DIGITAL POWER DIGITAL POWER
0171-2271-3274 0171-2271-3274 0171-2271-3274 Sheet Sheet Sheet 2 2 2
N/A N/A N/A REV: REV: REV:
363214420150.DSN 363214420150.DSN 363214420150.DSN PCB REV: PCB REV: PCB REV:
017122713274.BRD 017122713274.BRD 017122713274.BRD DATE: DATE: DATE:
Wednesday, August 25, 2010 Wednesday, August 25, 2010 Wednesday, August 25, 2010
1
D
C
B
A
of of of 16 16 16
04 04 04
04 04 04