DC959A - Schematic

5
J1
SS-6488-NF-K1
1
2
3
D
OUT
TO
CABLE
6
4
TX+
8
TX-
C34
8.2PF
RX+
T3
HPF2187L
1
7
2
12
C35
33PF
RX-
4
6
5
C37
8.2PF
7
4
TCT
C36
8.2PF
TD-
2
TXCT
10
3
RD+
RXCT
9
4
RCT
8
5
C38
33PF
7
2
1
J2
TD+
1
11
3
5
T4
HPX2126L
3
6
RDC29
8.2PF
1 1
2 2
3 3
4 4
48VIN TO [email protected], [email protected], AND [email protected] ISOLATED SUPPLY
HIGH POWER PD
(NON COMPLIANT TO IEEE802.3AF IF PD POWER EXCEEDS 12.95W)
OUT
TO
PHY
5 5
6 6
HD2X3-079
8
5
RJ45
D
COILCRAFT
DO1813H-331MLB
T1
PA1558NL
7
8
8
7
6
5
6
L1
0.33UH
C4
1500PF,100V
0805
R3
100K
PGND
VIN-
4
3
2
1
C20
47UF
1210
12
4
Q4
Si4362DY
R23
15K
R24
100K
ENDLY
RCMP
15 PGDLY
4
Q8
Si3430DV
1
2
5
6
R20
3.01K
1%
14
R19
20K
R25
2.1K
1%
R26
150K
C30
33PF
C31
OPT
E5
+C22
[email protected]
100UF,6.3V
3528
4
E8
D13
B0540W
GND
1
SENSE+ 12
R16
0.015
1/8W
1206
SENSE- 11
SYNC
C25
470PF
OPT
C21
47UF
1210
VC 9
Q6
FMMT718
3
2
SG
R17
330
C26
3300PF
C27
0.1UF
8
C32
0.1UF
R27
10K
Q7
FMMT618
2
3
T2
PA0184
5
B
C24
1UF,25V
0805
R22
15
C28
2200PF
D14
BAT54
C33
680PF
1
R15
47
0805
3
SG 1
U1
LT3825EFE
10 UVLO
5
3
8 FB
GND
R28
10K
4
1
E4
R12
402K
3
3
C12
0.01UF
50V
D12
BAS21
1
3
VCC 2
R13
29.4K
1%
TON
2
Q5
CMPT8599
1
R18
100K
VIN-
L3
0.33UH
2
R11
0
Q3
Si4488DY
C
COILCRAFT
DO1813H-331MLB
3
2
1
R10
91
0805
[email protected]
C10
22UF
16V
1210
E7
11
SG
B
R21
20K
C19
0.1UF
1
PWRGD 6
VOUT 5
C18
22UF
16V
1210
D11
BAS21
1
3 NC
4 VIN
C2
0.01UF
100V
9
1%
D10
1N4148WT
1
2
GND 8
SIGDISA 7
GND
8
7
6
5
C17
1000PF
2KV
1808
1 NC
2 RCLASS
3
2
1
RCLASS
30.9
4
5
6
7
8
D8
C9
22UF
16V
1210
R8
10
1/4W
1206
Q2
Si4488DY
1
2
3
D9
U2
LTC4257CDD-1
4
R9
20K
1/4W
1206
GND
D7
E3
C11
220PF,100V
0805
10
17
D6
CCMP
C16
0.01UF
200V
0805
13
C15
0.01UF
200V
0805
PG 16
C14
0.01UF
200V
0805
SFST
C13
0.01UF
200V
0805
3
1206
OSC
R7
75
D4
E6
9
C7
OPT
6
R6
75
D5
SANYO
100MV12AX
R2
OPT
1206
7
R5
75
D3
C6
2.2UF,100V
1812
12UF,100V
1
R4
75
D2
2
+C5
3
C
R14
100K
D1
SMAJ58A
NC
B2100 X 8 PLCS
C8
0.1UF,100V
0805
[email protected]
100UF,6.3V
3528
1
8
7
6
5
VIN+
1
E2
2
VIN+
37V-57V
4
L2
4.7UH
E1
+C3
R1
10
1/4W
1206
Q1
Si4470EY
COILTRONICS
HCP0703-4R7-R
C1
47UF
1210
E9
C23
4700PF
250V
MURATA, GA343D
A
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE 0603.
CUSTOMER NOTICE
CONTRACT NO.
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
APPROVALS
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
2
DRAWN:
CHECKED:
APPROVED:
ENGINEER: RYAN H.
DESIGNER:
TECHNOLOGY
KIM T.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
HIGH-POWER MULTI-OUTPUT SUPPLY WITH POE CONTROLLER
SIZE
B
DATE:
DWG NO.
DC959A-1 * LTC4257CDD-1/LT3825EFE
Thursday, March 30, 2006
SHEET
1
REV
A-1
1 OF 1
A
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