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LTC4267CDHC Datasheet(PDF) 18 Page - Linear Integrated Systems

Part # LTC4267CDHC
Description  Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
PDF  32 Pages
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Manufacturer  LINEAR [Linear Integrated Systems]
Direct Link  http://www.linearsystems.com
Logo LINEAR - Linear Integrated Systems

LTC4267CDHC Datasheet(HTML) 18 Page - Linear Integrated Systems

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LTC4267
18
4267fc
APPLICATIO S I FOR ATIO
Figure 9. PD Front End with Isolation Transformer, Diode Bridges and Capacitor
16
14
15
1
3
2
RX–
6
RX+
3
TX–
2
TX+
RJ45
T1
PULSE H2019
4267 F09
1
7
8
5
4
11
9
10
6
8
7
D3
SMAJ58A
TVS
BR1
HD01
BR2
HD01
TO PHY
LTC4267
VPORTN
SPARE–
SPARE+
C14
0.1µF
100V
VPORTP
1
3
2
RX–
SPARE–
6
RX+
3
TX–
2
TX+
J2
IN
FROM
PSE
T1
RJ45
1
7
8
5
4
6
8
7
TXOUT+
OUT
TO PHY
TXOUT–
SPARE+
RXOUT+
RXOUT–
16
14
15
11
9
10
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE 5%
2. SELECT RCLASS FOR CLASS 1-4 OPERATION. REFER
TO DATA SHEET APPLICATIONS INFORMATION SECTION
C2: AVX 1808GC102MAT
D9 TO D12, D14 TO D17: DIODES INC., B1100
T1: PULSE H2019
RCLASS
1%
RCLASS
VPORTN
D13
MMSD4148
C11
0.1µF
100V
D6
SMAJ58A
R30
75
Ω
C24
0.01µF
200V
R31
75
Ω
C25
0.01µF
200V
R1
75
Ω
C7
0.01µF
200V
R2
75
Ω
C3
0.01µF
200V
C2
1000pF
2kV
D10
B1100
D12
B1100
D9
B1100
D11
B1100
D17
B1100
D16
B1100
D15
B1100
D14
B1100
VPORTP
LTC4267
4267 F10
Figure 10. PD Front End with Isolation Transformer, 2nd Schottky Diode Bridge



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