DC1814A - Schematic

5
4
3
2
1
REVISION HISTORY
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
2. INSTALL SHUNTS AS SHOWN.
R1
75
VDD
TP2
FOR HIGH SURGE ENVIRONMENTS
ADD A 10 OHM, 0805 RESISTOR
AT THIS LOCATION
DATA IN
R7
10K
R6
10K
9
10
1
2
R4
75
SS-7188S-A-NF
R8
R9
10K
SW1
10K
SDA
SCL
(-)
4.7uF
63V
J4
5
6
7
4
AD3
AD2
AD1
AD0
3
38
1
SDAOUT
SDAIN
37
INT
SCL
34
35
RESET
C4
1.0uF
100V
D3
SMAJ58A
22
5
20
4
21
6
19
DESCRIPTION
APPROVED
PRODUCTION
DILIAN R.
POWER LEVEL UPDATE DILIAN R.
T1 OPTION
DILIAN R.
DILIAN R.
SURGE RESISTOR
DATE
4/29/11
9/26/11
3/28/13
12/8/15
8
17
7
18
9
16
11
14
10
15
12
13
32
OUT
GATE
E3
C5
0.22uF
100V
RT1
75
CT1 0.01uF
0805 100V
RT2
75
CT2 0.01uF
0805 100V
RT3
75
CT3 0.01uF
0805 100V
RT4
75
CT4 0.01uF
0805 100V
D
DATA AND POWER OUT
FB1
D4
1
2
3
4
5
6
7
8
9
10
J1
SS-7188S-A-NF
C6
1000pF
2kV
FB2
FB4
SEE TABLE
F7
C1Q 3
3A, 1206
F9
C1Q 3
3A, 1206
2
9
11
12
20
21
23
24
28
29
C
F10
C1Q 3
3A, 1206
VPORT +
S1B
E4
VPORT -
8
U1
LTC4274AIUHF
D5
S1B
SEE TABLE
Q1
RS1
B
0.25
ASSEMBLY VERSION
CSRN2512FKR250
VEE
E2
FDMC86102
VEE
-WATT PSE
U1
38.7W
LTC4274AIUHF-1
MPZ2012S102A
-B
52.7W
LTC4274AIUHF-2
MPZ2012S102A
-C
70W
LTC4274AIUHF-3
MPZ2012S102A
-D
90W
LTC4274AIUHF-4
FBMH4532HM132-T
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
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
JK
DILIAN R.
TITLE: SCHEMATIC
TM
SINGLE PORT LTPoE++
SIZE
4
FB1, FB2, FB3, FB4
-A
CUSTOMER NOTICE
A
5
1
1a
1b
1c
VEE
R11
1.0K
1/4W
+
24
3
T1: WURTH 749022016
COILCRAFT ETH1-460L
100K
C2
B
SENSE
Q2
CMPTA92
DNC
31
R5
SMBJ64A
DGND
DGND
DGND
DGND
30
10
15
16
17
D2
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
MID
VEE
VEE
VEE
VEE
VEE
VEE
TP1
(55V TO 57V)
23
1
NOTE: FOR TEMPERATURE SENSITIVE 90W
APPLICATIONS, TWO OF THE 749012013 MAY BE
F8
USED AS AN ALTERNATE TO T1 WHICH HAS A
C1Q 3
HIGHER CURRENT RATING
3A, 1206
C1
0.1uF
DGND
MAIN PS
INPUTS
AUTO
MSD
14
36
VDD
AGND
D23
5.6V
33
1
D1
3.9V
13
R10
1
18
3
J3
SHDN
MMSZ4686T1
19
22
25
26
27
39
E1
C3
1000pF
2kV
2
FB3
2
SHDN
C
R3
75
J2
RESET
1
R2
75
1
2
3
4
5
6
7
8
SW2
(+)
REV
_
_
_
T1
D
AGND
ECO
N/A
SCALE = NONE
DATE:
IC NO.
PSE CONTROLLER
LTC4274AIUHF FAMILY
REV.
1
DEMO CIRCUIT 1814A
Tuesday, December 08, 2015
SHEET 1
1
OF 1
A
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