EVB-LAN9353 Datasheet, PDF (31/43 Pages) Microchip Technology – EVB-LAN9353 Evaluation Board User’s Guide

FIGURE B-2:
EVB-LAN9353 EVALUATION BOARD SCHEMATIC 2
POWER SUPPLY
J1 _3-$+
1 5V_EXT
3
2
TP1
RED
5V
SW1
1
FB1
2
5V_SW
3
R1
2A/0.05DCR
0
Switch, SPDT, Slide
P/N:1101M2S3CQE2
C2
10uF
25V
3 .3V REGULATOR, 3A
( 3V3 fixed when Rb=503e)
U1
EN12_1
C3
2
4
1 ^VIN
VOUT ₅
ENABLE TRIM
3
3_Amp ^GND
0.1uF _{OKR-T/3-W12-C}
VOUT_3V3
R3
3.30K
1%
R4
470E
1%
R4A
33E
1%
(Ra) (Rb)
C4
10uF
TP2
ORANGE
3V3
C5
0.1uF
C1
4.7uF
DNP
3V3
R2
1K
D1
GRN
3V3
SW2
sw_pb_2P
R6
10.0K
1/10W
1%
1
2
R7
1/10W
100
1%
3V3
3V3
C6
0.1uF
R5
4.75K
1%
U2
4
MR#
1
RESET#
3
RESET
NDS355AN_NMOS
R8
1K ₁
G
TPS3125
SOT23_5
Threshold = 2.64V
Delay = 180ms
D
Q1
S
Reset Generator
RST#
TP9
TP10
BLACK BLACK
3V3
RED
U3
2
4
R9
2.2K
1
A
2
C
74LVC1G14
D2
"Reset"