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Ext +3.3V IN
+3.3V OUT
3.3V
GND1
GND
Power & LEDs
Holes for standoffs
Ext +5V IN
1
Parts not used
1
J33
TP10
TP16
R58
200
+
C42
10uF
+
C41
10uF
+
C36
10uF
C38
1.0uF
1
2
J39
1
2
3
J34
1
2
3
4
J38
TP13
TP4
C40
1.0uF
1
IN
2
GND
3
EN
4
FB
5
OUT
U5
TPS76333DBVT
R19
10K
D1
L
TST
-C190YKT
R3
10K
D2
L
TST
-C190CKT
R1
100
R1
1
100
1
2
3
J5
R18
4.7K
R2
4.7K
1
2
3
J2
Q1
MMBT3904TT1G
Q2
SH1
1
M1
TH-SCREW#6_PLA
TED
1
M2
TH-SCREW#6_PLA
TED
1
M3
TH-SCREW#6_PLA
TED
1
M4
TH-SCREW#6_PLA
TED
D5
L
TST
-C190YKT
R34
10
V33A
[1,2,8]
USB_V33
[6]
+3_3V
[1,2,4,5,6,9]
DGND
DGND
DGND
DGND
+3_3V
[1,2,4,5,6,9]
PWM0/SYNC/TCAP/ADC_EXT/ADC_EXT
[1,2,5]
TDO/SCI_TX0/F
AUL
T0
[1,2,5]
TDI/SCI_RX0/F
AUL
T1
[1,2,5]
TCK/TCAP/SYNC/PWM0
[1,2,5]
+3_3V
[1,2,4,5,6,9]
DGND
AGND
+3_3V
[1,2,4,5,6,9]
AGND
+5V_EXT
DGND
DGND
+3_3V
[1,2,4,5,6,9]
Schematics
Figure 4. UCD3138OL40EVM-032 Schematics (bias and LEDs) 4 of 9
7
SLUUA80 – January 2013
Using the UCD3138OL40EVM-032
Copyright © 2013, Texas Instruments Incorporated