5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
+12V_Normal power to +5V_Normal power
Rup
Rdw
Rsw
5V Standby Power to 3.3V Standby /1.15V Core Power
+3.3V_Normal power to DDR_Power (DDR3-1.5V)
RA
RB
Vout=1.25V*(1+RB/RA)+80uA*RB
+5V_Normal power to +3.3V_Normal power
+5V_Normal power to +3.3V_TUNER
+5V_Normal power to 8831-DVB-T2 Demod 1.2V
DVB-T2 require
DVB-S require
Vout =1.277V=1.25* (1+10.2/470)
Demod :1.2V ~1.26V ~1.32V
RA
RB
Vout=1.25V*(1+RB/RA)+80uA*RB
+5V_Normal power to MSB1312 Demod 1.2V
Vout=0.77V x {1+[(Rup*Rsw)/(Rup+Rsw)]/Rdw}
Vout=0.6 x (1+RU/RD)
LX1=0.6 x (1+560/124) =3.309
LX2=0.6 x (1+93.1/100) =1.1586
POWER_EN
+5V_Normal
+12V_NORMAL
+5V_Standby
+3.3V_Normal
+3.3V_Normal
+3.3V_TUNER
+5V_Normal
+5V_Normal
VCC1.5V
+5V_Normal
MCP_VDDC
DM_1.2V
+5V_Normal
+3.3V_Standby
VCC1.10V
POWER_EN
PG
Size Document Number R
ev
Date: Sheet of
Title
401C7L
1C
SCHEMATIC,M/B VTV-L50005
C
2 19Monday, November 24, 2014
Size Document Number Rev
Date: Sheet of
Title
401C7L
1C
SCHEMATIC,M/B VTV-L50005
C
2 19Monday, November 24, 2014
Size Document Number Rev
Date: Sheet of
Title
401C7L
1C
SCHEMATIC,M/B VTV-L50005
C
2 19Monday, November 24, 2014
C38
22uF/0805/6.3V
C38
22uF/0805/6.3V
C5
10uF/0603/25V
C5
10uF/0603/25V
R14
100R/0603/1%
R14
100R/0603/1%
C3
0.1uF/0402/16V
C3
0.1uF/0402/16V
U1
AX3771/1A/QFN12
U1
AX3771/1A/QFN12
VIN1
7
NC1
5
VIN2
1
EN2
12
LX2
2
FB2
10
GND1
9
GND2
3
NC2
11
EN1
6
LX1
8
FB1
4
13
PADC13 15pF/0402/50VC13 15pF/0402/50V
C1
10uF/0603/25V
C1
10uF/0603/25V
L3
3.3uH/SCD0403/3.3A
L3
3.3uH/SCD0403/3.3A
C49
22uF/0805/6.3V
C49
22uF/0805/6.3V
C20
0.1uF/0402/16V
C20
0.1uF/0402/16V
FB10
CLS/0603/60/3A
FB10
CLS/0603/60/3A
C7
10uF/0603/25V
C7
10uF/0603/25V
R10 9.1K/0603/1%R10 9.1K/0603/1%
C35
0.1uF/0402/16V
C35
0.1uF/0402/16V
FB6
CLS/0603/60/3A
FB6
CLS/0603/60/3A
R12
124K/0603/1%
R12
124K/0603/1%
R13
470R/0603/1%
R13
470R/0603/1%
C4
10uF/0603/25V
C4
10uF/0603/25V
FB3
CLS/0603/60/3A
FB3
CLS/0603/60/3A
G
S
D
Q30
YS-P2301/SOT-23
G
S
D
Q30
YS-P2301/SOT-23
FB12
CLS/0603/60/3A
FB12
CLS/0603/60/3A
FB2
CLS/0603/60/3A
FB2
CLS/0603/60/3A
R9
62K/0603
R9
62K/0603
C9
10uF/0603/25V
C9
10uF/0603/25V
C83
22uF/0805/6.3V
C83
22uF/0805/6.3V
U7
AX1007E12A/SOT223
U7
AX1007E12A/SOT223
ADJ/GND
1
VIN
3
VOUT
2
VOUT
4
C41
0.1uF/0402/16V
C41
0.1uF/0402/16V
C33
0.1uF/0402/16V
C33
0.1uF/0402/16V
R199
1K/0402
R199
1K/0402
C19
10uF/0603/6.3V
C19
10uF/0603/6.3V
FB13
CLS/0603/60/3A
FB13
CLS/0603/60/3A
C25
0.1uF/0402/16V
C25
0.1uF/0402/16V
C30
10uF/0603/6.3V
C30
10uF/0603/6.3V
C18
10uF/0603/25V
C18
10uF/0603/25V
R5
12K/0603/1%
R5
12K/0603/1%
FB4
CLS/0603/60/3A
FB4
CLS/0603/60/3A
C6
0.1uF/0402/16V
C6
0.1uF/0402/16V
C22
10uF/0603/6.3V
C22
10uF/0603/6.3V
L1
3.3uH/SCD0403/3.3A
L1
3.3uH/SCD0403/3.3A
L2
3.3uH/SCD0403/3.3A
L2
3.3uH/SCD0403/3.3A
U2
BD95835EFJ
U2
BD95835EFJ
RT
6
VIN
2
EN
7
SW
3
FB
5
GND
4
BST
1
PW_PAD
9
SS
8
R2
33K/0603/1%
R2
33K/0603/1%
C10
390pF/0402/50V/10%
C10
390pF/0402/50V/10%
FB9
CLS/0603/60/3A
FB9
CLS/0603/60/3A
C11
10uF/0603/25V
C11
10uF/0603/25V
U4
AX1117AD33A/TO252
U4
AX1117AD33A/TO252
ADJ / GND
1
VIN
3
VOUT
2
C23
22uF/0805/6.3V
C23
22uF/0805/6.3V
C21
0.1uF/0402/16V
C21
0.1uF/0402/16V
R3
82R/0603
R3
82R/0603
R11
100K/0603/1%
R11
100K/0603/1%
FB7
CLS/0603/60/3A
FB7
CLS/0603/60/3A
C39
10uF/0603/6.3V
C39
10uF/0603/6.3V
C37
10uF/0603/6.3V
C37
10uF/0603/6.3V
R4
806K/0603/1%
R4
806K/0603/1%
C28
10uF/0603/25V
C28
10uF/0603/25V
C12
10uF/0603/25V
C12
10uF/0603/25V
R7
93.1K/0603/1%
R7
93.1K/0603/1%
R16
10.2R/0603/1%
R16
10.2R/0603/1%
FB5
CLS/0603/60/3A
FB5
CLS/0603/60/3A
C31
0.1uF/0402/16V
C31
0.1uF/0402/16V
C40
22uF/0805/6.3V
C40
22uF/0805/6.3V
C36
0.1uF/0402/16V
C36
0.1uF/0402/16V
R1
100K/0402
R1
100K/0402
U3
AX1117AEA/SOT223
U3
AX1117AEA/SOT223
ADJ/GND
1
VIN
3
VOUT
2
VOUT
4
C26
10uF/0603/25V
C26
10uF/0603/25V
R8 56K/0603/1%R8 56K/0603/1%
C29
0.1uF/0402/16V
C29
0.1uF/0402/16V
U6
AX1117AEA/SOT223
U6
AX1117AEA/SOT223
ADJ/GND
1
VIN
3
VOUT
2
VOUT
4
C27
0.1uF/0402/16V
C27
0.1uF/0402/16V
C34
10uF/0603/25V
C34
10uF/0603/25V
R15
470R/0603/1%
R15
470R/0603/1%
FB11
CLS/0603/60/3A
FB11
CLS/0603/60/3A
C1415pF/0402/50V C1415pF/0402/50V
FB8
CLS/0603/60/3A
FB8
CLS/0603/60/3A
FB1
CLS/0603/60/3A
FB1
CLS/0603/60/3A
C15
0.1uF/0402/16V
C15
0.1uF/0402/16V
C24
10uF/0603/25V
C24
10uF/0603/25V
C2
10uF/0603/25V
C2
10uF/0603/25V
U5
AX1117AD33A/TO252
U5
AX1117AD33A/TO252
ADJ / GND
1
VIN
3
VOUT
2
C32
10uF/0603/25V
C32
10uF/0603/25V
R6
560K/0603/1%
R6
560K/0603/1%
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