22μF
C35
4.7μF
C33
4.7μF
C34
5.1V
2
1
MMSZ4689-V
D1
49.9k
R44
24.9k
R49
13.7k
R50
178k
R51
5V
D2
165k
R48
174k
R45
C42
NI
R54
NI
GND
GND
GND
GND
GND
GND
GND
AGND
1
AGND
4
AGND
5
AGND
30
AGND
32
AGND
33
AGND
34
AGND
37
DNC
2
DNC
3
GND_PT
9
VOUT
10
VOUT
11
VOUT
12
VOUT
13
VOUT
14
VOUT
15
VOUT
39
PGND
16
PGND
17
DNC
25
PH
6
PH
7
PH
21
PH
22
PH
23
PH
24
PH
38
PH
41
GND_PT
8
PGND
18
PGND
19
PGND
20
PGND
40
VIN
26
INH/UVLO
27
SS/TR
28
STSEL
29
RT/CLK
31
PWRGD
35
VADJ
36
LMZ35003RKG
U3
GND
OUT
1
NC
2
SENSE
3
6P4V2
4
6P4V1
5
3P2V
6
GND
7
1P6V
8
0P8V
9
0P4V
10
0P2V
11
0P1V
12
EN
13
NR
14
IN
15
IN
16
NC
17
NC
18
NC
19
OUT
20
PAD
U4
TPS7A4700RGW
47μF
C36
47μF
C37
R53
NI
R55
NI
0
R56
R57
NI
R58
NI
0
R59
R60
NI
R61
NI
10μF
C38
1 F
μ
C39
0
R47
1 F
μ
C43
10μF
C41
GND
47μF
C40
GND
GND
GND
GND
300
R46
USEWALL WART T1094-P5P-ND19-30V
1
2
3
JP3
GND
1
2
3
JP4
GND
VDUT
1
2
3
JP5
GND
10μF
C46
10μF
C47
10μF
C52
R52
NI
10μF
C48
10μF
C51
0.1μF
C49
1 F
μ
C50
GND
0.47
R68
GND
GND
2.5V REF
DNC
1
VIN
2
TEMP
3
GND
4
TRIM/NR
5
VOUT
6
NC
7
DNC
8
U6
REF5025IDGK
IN
3
OUT
2
GND
1
TAB
4
U5
LM1086CS-3.3
GND
GND
GND
10μF
C45
10μF
C44
3.3V
D3
GND
120
R64
0
R69
TP5
IOVDD
TP4
AVCC
0
R65
0
R62
TP3
AVDD/DVDD
4
1
2
3
J6
ED555/4DS
GND
EXT POWER
+5V
+5V
+5V
+5V
+3.3V
+3.3V
+3.3V
+3.3V
+14V
+14V
VDUT
AVCC
IOVDD
AVDD/DVDD
AVDD/DVDD
Onboard VREF
Power Selection
Supply Regulation
Jumper Table:
- JP3 (AVDD/DVDD): Onboard / external AVDD/DVDD supply select.
1-2 selects onboard supply (d5V)
2-3 selects external supply (pin J6-1)
- JP4 (AVCC): Onboard / external AVCC supply select.
1-2 selects onboard supply (d14V)
2-3 selects external supply (pin J6-2)
- JP5 (IOVDD): Onboard / external IOVDD supply select.
1-2 selects onboard supply (default VDUT)
2-3 selects external supply (pin J6-3)
AVDD/DVDD
AVCC
IOVDD
R63
NI
R66
NI
R67
NI
R70
NI
R71
NI
1
3
2
J5
PJ-102A
+3.3V
AMC7812EVM Documentation
Figure 36. AMC7812EVM Schematic (3 of 3)
24
AMC7812EVM-PDK User’s Guide
SBAU177D – September 2010 – Revised August 2014
Copyright © 2010–2014, Texas Instruments Incorporated
