EVBUM2565/D
www.onsemi.com
11
Figure 10. Power Supply Schematic
VBUS
4.7
μ
F
C43
DNP
C40 4.7
μ
F
C42 1uF
C41 1uF
Vi
n
1
GND
2
EN
3
N/C
4
Vout
5
U3
N
C
P551SN32T1G
VBA
T_DUT
R32
DNP
V3.3
VDD_A
T
1 2 3 4 5 6
P4
VL
1
I/O VL1
2
I/O VL2
3
I/O VL3
4
I/O VL4
5
NC
6
GND
7
I/O V
cc
4
8
NC
9
I/O V
cc
3
10
I/O V
cc
2
11
I/O V
cc
1
12
Vcc
13
EN
14
U4
NLSX5014
VDDO
C46 1uF
C47 10nF
R36
10k
C44 10nF
C45 1uF
V3.3
1
3
5
2
4
6
7
8
P6
2x4 H
eader
R35 0
R34 0
GND
VEXT
V3.3
VDDO
VDDO
R40 10k
VIN3.3V
5V
V3.3
1
2
3
J5 BA
T
−
HLD
−
012
2
1
3
P8
2
1
3
P9
VDD_A
T Sel
ec
t
VDDO Se
lect
Op
tiona
l Leve
l Sh
ifter
2
1
P5
2
1
P3
2
1
3
P7
2
1
3
P10
VBA
T
V
B
A
T
S
elect
3.3V Sel
ec
t
POWE
R OPTIONS
EXTERNAL
POWER
CU
R
RENT
VREG
POWE
R SU
PP
LY
CON
FIGURA
TION HEADE
R
S P4
, P7
, P10
ST
AND ALONE U
SB POWERED: P4(1
−
2)
, P7(2
−
3)
, P10(1
−
2)
ST
AND ALONE V
ext POWERED: P4(3
−
4)
, P7(2
−
3)
, P10(1
−
2)
ST
AND ALONE U
SB and V
ext POWERED: P4(1
−
2)
, (5
−
6)
, P7(2
−
3)
, P10(2
−
3)
VDDO
is
th
e digital IO ring supply
(provided
ext
ernally
).
R
ang
e : 1.1V
−
3.3V
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