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LTC4267CDHC датащи(PDF) 25 Page - Linear Integrated Systems

номер детали LTC4267CDHC
подробное описание детали  Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
PDF  32 Pages
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производитель  LINEAR [Linear Integrated Systems]
домашняя страница  http://www.linearsystems.com
Logo LINEAR - Linear Integrated Systems

LTC4267CDHC датащи(HTML) 25 Page - Linear Integrated Systems

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LTC4267
25
4267fc
Figure 16. Auxiliary Power Source for PD
APPLICATIO S I FOR ATIO
RX–
6
RX+
3
TX–
2
TX+
RJ45
T1
1
7
8
5
4
SPARE–
+
–
SPARE+
ISOLATED
WALL
TRANSFORMER
TO PHY
VPORTP
OPTION 1: AUXILIARY POWER INSERTED BEFORE LTC4267 PD
OPTION 2: AUXILIARY POWER INSERTED AFTER LTC4267 PD WITH SIGNATURE DISABLED
VPORTN POUT
PGND
PGND
38V TO 57V
D8
S1B
D3
SMAJ58A
TVS
C1
PGND
PGND
C14
0.1µF
100V
RX–
6
RX+
3
TX–
2
TX+
RJ45
T1
1
7
8
5
4
SPARE–
+
–
SPARE+
ISOLATED
WALL
TRANSFORMER
TO PHY
VPORTP
SIGDISA
LTC4267
LTC4267
BR2
HD01
~
~
+
–
BR1
HD01
~
~
+
–
BR1
HD01
~
~
+
–
VPORTN POUT
4267 F16
D10
S1B
D3
SMAJ58A
TVS
C1
100k
D9
S1B
OPTION 3: AUXILIARY POWER APPLIED TO LTC4267 PD AND SWITCHING REGULATOR
RX–
6
RX+
3
TX–
2
TX+
RJ45
T1
1
7
8
5
4
SPARE–
+
–
SPARE+
ISOLATED
WALL
TRANSFORMER
TO PHY
38V TO 57V
VPORTP
LTC4267
VPORTN POUT
D10
S1B
D3
SMAJ58A
TVS
C1
C14
0.1µF
100V
C14
0.1µF
100V
BR2
HD01
~
~
+
–
BR1
HD01
~
~
+
–
BR2
HD01
~
~
+
–
100k
BSS63
RSTART
CPVCC
RSTART
CPVCC
RSTART
CPVCC
PGND
PVCC
PGND
PVCC
PVCC



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