Silicon Laboratories Si2457 Manual de usuario Pagina 18

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Si2493/57/34/15/04
Global ISOmodem-EVB
18 Rev. 0.7
RESETb
+3.3V
VCC_USB
+4.7V
J8
7-12V AC/DC PWR
J8
7-12V AC/DC PWR
1
2
R103 1.6R103 1.6
R105 1.6R105 1.6
D49
MMBD3004S-7-F
D49
MMBD3004S-7-F
D11
STPS140Z
SOD-123D11
STPS140Z
SOD-123
D50 RED
+3.3V PWR
D50 RED
+3.3V PWR
D13 STPS140ZD13 STPS140Z
U18
DS1818
U18
DS1818
VCC
2
GND
3
RST
1
U3
LT1963A-3.3 V
SOT223
U3
LT1963A-3.3 V
SOT223
GND
IN OUT
GND
C51
0.01uF
25V
C51
0.01uF
25V
C66
10uF
C66
10uF
C48
0.1uF
50V
C48
0.1uF
50V
FB7
600 Ohm
FB7
600 Ohm
C96
0.1uF
C96
0.1uF
FB6
600 Ohm
FB6
600 Ohm
-+
D12
Bridge Rectifier
-+
D12
Bridge Rectifier
C43
1uF
C43
1uF
R57
0.05
R57
0.05
C42
0.01uF
25V
C42
0.01uF
25V
R161 681R161 681
C49
10uF
C49
10uF
+
C44
470uF
+
C44
470uF
U10
TO263-3N
LM2937ES-5.0
U10
TO263-3N
LM2937ES-5.0
GND
IN OUT
GND
S1
RESET
S1
RESET
R102
1.33K
R102
1.33K
J9
7-12V AC/DC PWR
J9
7-12V AC/DC PWR
3
2
1
Figure 12. Power Supply Schematic
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