4 EVM Schematics
4.1 Power Supply Schematic
SELECT LDO or BYPASS
1uF
C20
DUAL 1-A LDO REG (LDO1, LDO2) for DUT VDD & VDDO rails
VDDO_PLANE
TP5
VDDO
10uF
C19
0.1uF
C12
20V
D1
DIODE_SCHOTTKY
1uF
C21
22uF
C11
10uF
C7
0.01uF
C1
3.3V
LDO2
3.57k
R6
1.15k
R7
1.15k
R3
3.57k
R1
10uF
C2
10uF
C15
10uF
C13
FB2
FB1
EN1
EN2
0.1uF
C16
0.1uF
C9
47k
R5
TP1
LDO1
DNP
TP7
VIN2
DNP
TP3
VIN1
DNP
0
R4
LDOIN
0.01uF
C17
DNP
0.01uF
C14
47k
R2
0.01uF
C8
DNP
47µF
C10
10uF
C25
30.9k
R9
10.0k
R10
1-A LDO REG (LDO3) for XO rail
LDO3
10uF
C23
3.6 to 5 V
47µF
C27
LDO3 OUT 3.3V
VIN2
VIN1
47k
R8
0.01uF
C24
EN3
OUT
1
OUT
2
FB/SNS
3
GND
4
EN
5
NR
6
IN
7
IN
8
PAD
9
U3
0.47uF
C22
0.47uF
C26
DUT VDDO OUTPUT POWER (3.3V)
LDO1 OUT: 3.3 V
LDO2 OUT: 3.3 V
1
2
3
4
J1
PWR
TP6
LDO3
DNP
TPS7A8801RTJR
IN1
1
IN1
2
GND
3
IN2
4
IN2
5
EN2
6
NR/SS2
7
SS_CTRL2
8
PG2
9
FB2
10
OUT2
11
OUT2
12
GND
13
OUT1
14
OUT1
15
FB1
16
PG1
17
SS_CTRL1
18
NR/SS1
19
EN1
20
PAD
21
U2
1
2
3
JP3
M20-8770342
LDO3 IN
1uF
C5
VDD_PLANE
TP2
VDD
10uF
C4
1uF
C6
22uF
C3
DUT VDD CORE POWER (3.3V)
1
2
3
JP1
M20-8770342
LDO1
20V
D2
DIODE_SCHOTTKY
22uF
C18
1
2
3
JP2
M20-8770342
VDDO
TP4
LDO2
DNP
VIN3
1
2
3
4
5
J2
VIN1
DNP
1
2
3
4
5
J3
VIN2
DNP
POWER INPUT
SH3
SNT-100-BK-G
SH2
SNT-100-BK-G
SH1
SNT-100-BK-G
VDD
Figure 4-1. Power Supplies
EVM Schematics
AD
V
A
NCE INFO
R
MA
TION
14
LMK5C33216EVM User's Guide
SNAU260A – OCTOBER 2020 – REVISED FEBRUARY 2021
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