DC1843B - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
2
KEY-575
V_LED
R12-R15
3.9k
1206
MSD
RESET
1
OUT4
RE4
10M
V_LED
V_LED
V_LED
RL4
1.5k
V_LED
J5
R3
OPT C14
0.1uF
2
1
3
4
5
6
5
6
7
8
7
8
9
10
9
10
11
12
11
12
13
14
13
14
Q10
Si2343CDS
OUT11
1
RE11
10M
V_LED
1
Q11
Si2343CDS
OUT12
2
1
RE12
10M
R4
OPT C13
0.1uF
REP2
5.1k
R6
5.1k
8
7
5
Q12
Si2343CDS
V_LED
C6
1000pF,2KV
1808
C7
1000pF,2KV
1808
C8
1000pF,2KV
1808
C9
1000pF,2KV
1808
WP
WP
A1
SCL
A2
SDA
VSS
TP1
3
13
18
3
19
20
E12
21
OUT5
OUT6
22
23
E13
24
25
26
E14
27
OUT7
OUT8
28
E16
29
E15
30
31
E17
32
E2
33
OUT11
OUT12
1
2
34
E1
3
4
VEE
1
2
3
4
5
6
7
8
9
10
C
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
B
28
29
30
31
32
33
34
SAMTEC
MMS-134-02-T-SV
NOTE: UNLESS OTHERWISE SPECIFIED
EEGND
1. ALL RESISTORS AND CAPACITORS ARE 0603.
2. INSTALL SHUNTS AS SHOWN.
CUSTOMER NOTICE
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
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
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.
4
12
17
E8
OUT9
OUT10
A0
10
15
E11
HD2X7-079-MOLEX
VCC
9
11
OUT3
OUT4
TECHNOLOGY
KIM T.
DILIAN R.
TITLE: SCHEMATIC
12-PORT IEEE802.3at PSE MOTHER BOARD
SIZE
5
8
16
I2C EXPANSION
24LC025-I/ST
6
RL12
1.5k
7
14
E9
U4
PORT12
LED12
GREEN
5
OUT1
OUT2
C2
0.1uF
2
RD12
2M
2
4
RL8
1.5k
2
RL11
1.5k
J6
3
REP1
5.1k
3
1
1
RD11
2M
2
RL10
1.5k
PORT11
LED11
GREEN
4
E5
VDD33
HD2X7-079-MOLEX
V_LED
2
1
PORT10
LED10
GREEN
RE8
10M
2
1
1
Q8
Si2343CDS
3
(NC)
PORT4
LED4
GREEN
PORT8
LED8
GREEN
2
INT#
RESET#
VDD33
3
2
V_LED
2
V_LED
1
RE10
10M
OUT8
3
OUT7
RE7
10M
1
SCL
SDAIN
SW2
MSD
E10
E6
E7
Q4
Si2343CDS
1
Q7
Si2343CDS
3
3
OUT9
Q9
Si2343CDS
OUT10
RD8
2M
2
2
RD10
2M
2
RL9
1.5k
RL7
1.5k
J1
(SDAOUT)
V_LED
PORT7
LED7
GREEN
1
Q6
Si2343CDS
3
RE6
10M
PORT9
LED9
GREEN
1
RE9
10M
RD7
2M
2
2
RD9
2M
A
1
2
3
Q5
Si2343CDS
OUT6
V_LED
1
OUT5
RE5
10M
RL6
1.5k
3
1
PORT6
LED6
GREEN
2
RD6
2M
1
1
1
2
RL5
1.5k
2
RD5
2M
PORT5
LED5
GREEN
1
AD2
AD3
AD6
6
TO DC590
B
2
1
2
6
E4
3
OUT3
RE3
10M
1
Q3
Si2343CDS
5
HI
3
MSD#
VDD33
SW1
RESET
2
RD4
2M
ADDRESS
4
E3
2
2
1
Q2
Si2343CDS
3
OUT2
1
RE2
10M
RL3
1.5k
LO
D
SW3
219-3MST
INT
SCL
SDA
2
2
RD3
2M
2
Q1
Si2343CDS
3
OUT1
RE1
10M
RL2
1.5k
3
1
1
1
1
2
2
RD2
2M
VDD33
LED13
GREEN
ON
3
R8-R11
3.9k
1206
PORT3
LED3
GREEN
INT
LED14
RED
DGND
E23 E24 E25 E26
R16 R17
OPT OPT
Q14
ZXTP19100CGTA
09-04-15
E20
R1
470
0805
2
4
R21
1k 1
0805
OPTIONAL PORT LED DRIVERS
RL1
1.5k
R2
470
0805
C12
1uF
DGND
C
RD1
2M
D31
DDZ9688
C11
1uF
E19
Q13
ZXTP19100CGTA
R5
100k
0805
PORT2
LED2
GREEN
C5
10uF
0805
1
R19
0
2
VEE
PORT1
LED1
GREEN
C4
0.01uF
2
BYP
4
AGND
1
GND
5
V_LED
E27
VEE
10A, 0154010
LITTELFUSE
SHDN
C3
1uF
1
0805
R7
20k
1206
F2
NEG
VEE
LED15
ORANGE
3
OUT
DATE
DILIAN R.
2MM, 34 PIN CONNECTOR
J8
D5
1.5SMC62A
+
2
MOLEX-50-84-1020
C1
47uF,100V
R20
1k
R23
OPT
0805
IN
APPROVED
DIGITAL CONNECTIONS
VDD33
E18
VDD33
3
1
1
2
1
D4
1.5SMC62A
D1
MMSZ4691T1G
1
R18
0
2
4
C10
1uF,100V
1210
2
MAIN SUPPLY IN
LT1761ES5-3.3
2
1
D3
S5BC
J2
OPT
R22
OPT
0805
1
D2
S5BC
2
2
D
10A, 0154010
LITTELFUSE
2
KEY-575
U5
POLARITY PROTECTION DIODE, TVS, FUSES TO BE INCLUDED
1
F1
2
J7
1
POS
51V - 57V
ANALOG CONNECTIONS
AGND
E22
DESCRIPTION
REBUILD WITH CHANGE
N/A
SCALE = NONE
DATE:
IC NO.
REV.
DEMO CIRCUIT 1680B
Friday, September 04, 2015
1
SHEET
2
1
OF
4
A
5
4
3
2
1
UPPER ROW
RP2
RQ2
J3B
SS-73100-046F
RR2
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
CA2
1000pF
2kV
1808
RW2
RX2
RY2
RZ2
75
75
75
75
111
112 1
113 2
114 3
4
115
116 5
117 6
118 7
8
CX2 0.01uF
100V 0805
CY2 0.01uF
100V 0805
D
J4L
RO4
31
1 32
2 33
3 34
4
35
5 36
6 37
7 38
8
RQ4
SS-73100-046F
CB2
1000pF
2kV
1808
DP2
S1B
RP4
J3D
SS-73100-046F
CZ2 0.01uF
100V 0805
WE, 749022017
OUT2
PORT 2
CW2 0.01uF
100V 0805
RR4
12
13
75 10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
CA4
1000pF
2kV
1808
B
RQ1
J3A
SS-73100-046F
RR1
CA1
1000pF
2kV
1808
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
RW1
RX1
RY1
RZ1
75
75
75
75
PORT 1
CW1 0.01uF
100V 0805
101
102 1
103 2
104 3
4
105
106 5
107 6
108 7
8
CX1 0.01uF
100V 0805
CY1 0.01uF
100V 0805
J4K
CZ1 0.01uF
100V 0805
DP1
S1B
SHIELD
21
1 22
2 23
3 24
4
25
5 26
6 27
7 28
8
RP3
RQ3
SS-73100-046F
RR3
CA3
1000pF
2kV
1808
121
122
123
124
125
126
127
128
129
121
122
123
124
125
126
127
128
129
J3M
1
2
3
4
5
6
7
8
9
13
75 10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
RY4
75
CY4 0.01uF
100V 0805
75
91
92 1
93 2
94 3
4
95
96 5
97 6
98 7
8
D
J4J
SS-73100-046F
CZ4 0.01uF
100V 0805
CB4
1000pF
2kV
1808
C
SS-73100-046F
DATA/PoE OUT
75
CW3 0.01uF
100V 0805
RX3
75
CX3 0.01uF
100V 0805
RY3
75
CY3 0.01uF
100V 0805
75
OUT3
81
82 1
83 2
84 3
4
85
86 5
87 6
88 7
8
J4I
B
SS-73100-046F
CB3
1000pF
2kV
1808
DN3
S1B
VEE
TECHNOLOGY
KIM T.
DILIAN R.
TITLE: SCHEMATIC
12-PORT IEEE802.3at PSE MOTHER BOARD
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
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
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
3
PORT 3
CZ3 0.01uF
100V 0805
DP3
S1B
SS-73100-046F
4
RW3
RZ3
WE, 749022017
CUSTOMER NOTICE
J4M
5
CX4 0.01uF
100V 0805
DP4
S1B
12
LOWER ROW
VEE
1
2
3
4
5
6
7
8
9
RO3
J3C
SS-73100-046F
DN1
S1B
A
C
CB1
1000pF
2kV
1808
WE, 749022017
OUT1
75
T3
DATA IN
RJ45
RP1
15
11
DATA/PoE OUT
RJ45
1
1 2
2 3
3 4
4
5
5 6
6 7
7 8
8
75 10
RX4
PORT 4
VEE
SHIELD
RJ45
A
RO1
13
CW4 0.01uF
100V 0805
DN4
S1B
T1
12
75
RZ4
OUT4
VEE
DATA IN
RW4
WE, 749022017
DN2
S1B
C
DATA/PoE OUT
RJ45
11
1 12
2 13
3 14
4
15
5 16
6 17
7 18
8
75 10
RJ45
RJ45
RO2
13
T4
DATA IN
RJ45
B
D
12
DATA/PoE OUT
RJ45
T2
DATA IN
N/A
SCALE = NONE
DATE:
IC NO.
REV.
DEMO CIRCUIT 1680B
Friday, September 04, 2015
1
SHEET
2
2
OF
4
A
5
4
3
2
1
UPPER ROW
RQ6
J3F
SS-73100-046F
RR6
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
CA6
1000pF
2kV
1808
RW6
RX6
RY6
RZ6
75
75
75
75
71
72 1
73 2
74 3
4
75
76 5
77 6
78 7
8
CX6 0.01uF
100V 0805
CY6 0.01uF
100V 0805
H
J4H
RO8
71
1 72
2 73
3 74
4
75
5 76
6 77
7 78
8
RQ8
SS-73100-046F
RR8
13
75 10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
CA8
1000pF
2kV
1808
CB6
1000pF
2kV
1808
DP6
S1B
RP8
J3H
SS-73100-046F
CZ6 0.01uF
100V 0805
WE, 749022017
OUT6
PORT 6
CW6 0.01uF
100V 0805
12
41
1 42
2 43
3 44
4
45
5 46
6 47
7 48
8
RP5
RQ5
J3E
SS-73100-046F
RR5
CA5
1000pF
2kV
1808
75 10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
DATA/PoE OUT
RW5
RX5
RY5
RZ5
75
75
75
75
PORT 5
CW5 0.01uF
100V 0805
61
62 1
63 2
64 3
4
65
66 5
67 6
68 7
8
CX5 0.01uF
100V 0805
CY5 0.01uF
100V 0805
G
J4G
61
1 62
2 63
3 64
4
65
5 66
6 67
7 68
8
DP5
S1B
RP7
RQ7
J3G
SS-73100-046F
CZ5 0.01uF
100V 0805
RO7
SS-73100-046F
CB5
1000pF
2kV
1808
WE, 749022017
OUT5
75
CX8 0.01uF
100V 0805
RY8
75
CY8 0.01uF
100V 0805
RZ8
75
CZ8 0.01uF
100V 0805
RR7
CA7
1000pF
2kV
1808
12
13
75 10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
J4F
SS-73100-046F
CB8
1000pF
2kV
1808
C
DATA/PoE OUT
RW7
75 CW7 0.01uF
100V 0805
RX7
75
RY7
75
RZ7
75
41
42 1
43 2
44 3
4
45
46 5
47 6
48 7
8
CY7 0.01uF
100V 0805
B
J4E
SS-73100-046F
CZ7 0.01uF
100V 0805
CB7
1000pF
2kV
1808
DP7
S1B
OUT7
PORT 7
CX7 0.01uF
100V 0805
WE, 749022017
DN7
S1B
DN5
S1B
VEE
VEE
LOWER ROW
CUSTOMER NOTICE
A
TECHNOLOGY
KIM T.
DILIAN R.
TITLE: SCHEMATIC
12-PORT IEEE802.3at PSE MOTHER BOARD
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
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
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
5
51
52 1
53 2
54 3
4
55
56 5
57 6
58 7
8
T7
DATA IN
RJ45
RO5
RX8
PORT 8
VEE
RJ45
B
RJ45
E
13
CW8 0.01uF
100V 0805
DN8
S1B
T5
12
75
DP8
S1B
OUT8
VEE
DATA IN
D
RW8
WE, 749022017
DN6
S1B
C
DATA/PoE OUT
RJ45
RP6
75 10
RJ45
51
1 52
2 53
3 54
4
55
5 56
6 57
7 58
8
13
T8
DATA IN
RJ45
RJ45
F
RO6
12
DATA/PoE OUT
RJ45
T6
DATA IN
D
N/A
SCALE = NONE
DATE:
IC NO.
REV.
DEMO CIRCUIT 1680B
Friday, September 04, 2015
1
SHEET
2
3
OF
4
A
5
4
3
2
1
UPPER ROW
RQ10
J3J
SS-73100-046F
RR10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
CA10
1000pF
2kV
1808
RW10
RX10
RY10
RZ10
31
32 1
33 2
34 3
4
35
36 5
37 6
38 7
8
75 CX10 0.01uF
100V 0805
75 CY10 0.01uF
100V 0805
L
J4D
RO12
111
1 112
2 113
3 114
4
115
5 116
6 117
7 118
8
RQ12
SS-73100-046F
RR12
13
75 10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
CA12
1000pF
2kV
1808
CB10
1000pF
2kV
1808
DP10
S1B
RP12
J3L
SS-73100-046F
75 CZ10 0.01uF
100V 0805
WE, 749022017
OUT10
PORT 10
75 CW10 0.01uF
100V 0805
12
B
81
1 82
2 83
3 84
4
85
5 86
6 87
7 88
8
RP9
RQ9
J3I
SS-73100-046F
RR9
CA9
1000pF
2kV
1808
75 10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
DATA/PoE OUT
RW9
RX9
RY9
RZ9
75
75
75
75
PORT 9
CW9 0.01uF
100V 0805
21
22 1
23 2
24 3
4
25
26 5
27 6
28 7
8
CX9 0.01uF
100V 0805
CY9 0.01uF
100V 0805
K
J4C
101
1 102
2 103
3 104
4
105
5 106
6 107
7 108
8
DP9
S1B
RP11
RQ11
J3K
SS-73100-046F
CZ9 0.01uF
100V 0805
RO11
SS-73100-046F
RR11
CA11
1000pF
2kV
1808
CB9
1000pF
2kV
1808
WE, 749022017
OUT9
RY12
75 CY12 0.01uF
100V 0805
RZ12
75 CZ12 0.01uF
100V 0805
12
13
75 10
15
11
14
9
16
75 7
18
8
17
6
19
75 4
21
5
20
3
22
75 1
24
2
23
J4B
SS-73100-046F
C
DATA/PoE OUT
RW11
75 CW11 0.01uF
100V 0805
RX11
75 CX11 0.01uF
100V 0805
RY11
75 CY11 0.01uF
100V 0805
RZ11
1
2 1
3 2
4 3
4
5
6 5
7 6
8 7
8
B
J4A
SS-73100-046F
CB11
1000pF
2kV
1808
DP11
S1B
OUT11
PORT 11
75 CZ11 0.01uF
100V 0805
WE, 749022017
DN11
S1B
DN9
S1B
VEE
VEE
LOWER ROW
CUSTOMER NOTICE
A
TECHNOLOGY
KIM T.
DILIAN R.
TITLE: SCHEMATIC
12-PORT IEEE802.3at PSE MOTHER BOARD
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
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
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
5
11
12 1
13 2
14 3
4
15
16 5
17 6
18 7
8
CB12
1000pF
2kV
1808
T11
DATA IN
RJ45
RO9
75 CX12 0.01uF
100V 0805
VEE
RJ45
RJ45
I
13
RX12
PORT 12
DN12
S1B
T9
12
75 CW12 0.01uF
100V 0805
DP12
S1B
OUT12
VEE
DATA IN
D
RW12
WE, 749022017
DN10
S1B
C
DATA/PoE OUT
RJ45
RP10
75 10
RJ45
91
1 92
2 93
3 94
4
95
5 96
6 97
7 98
8
13
T12
DATA IN
RJ45
RJ45
J
RO10
12
DATA/PoE OUT
RJ45
T10
DATA IN
D
N/A
SCALE = NONE
DATE:
IC NO.
REV.
DEMO CIRCUIT 1680B
Friday, September 04, 2015
1
SHEET
2
4
OF
4
A
5
4
3
2
1
REVISION HISTORY
ECO
GP1
GP0
VDD33
11
SCL
SDAIN
SDAOUT
INT#
RESET#
16
TX+
1
TD+
15
CT(2)
2
CT
11
RX+
RD+
5
N/C
4
N/C
3
TD-
6
OUT5
OUT6
100
36
DNA
CNA
DPA
37
38
39
CPA
OUT7
OUT8
U2
NOTE 1, 2
RA1-RA4
G1 VEE
Q1
DATE
DILIAN R.
08-18-15
D
REQUIRED S1B DIODE PROTECTION
SHOWN ON MOTHER BOARD.
See NOTE 3
S1B
C
OUTn
S1B
OUT8
GATE8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
VEE
28
SENSE8
29
1
O8
R8
0
2
D74
OPT
0.22uF
X7R
100V
0805
1
0.22uF
X7R
100V
0805
2
VEE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
C8
G8
O7
G7
R7
0
D73
OPT
S8 19
OUT7
GATE7
26
27
SENSE7
O6
0.22uF
X7R
100V
0805
2
VEE
C7
1
1
R6
0
D72
OPT
S7 18
OUT6
23
GATE6
SENSE6
24
0.22uF
X7R
100V
0805
2
VEE
S6 17
O5
R5
0
D71
OPT
C6
G6
OUT5
GATE5
21
22
SENSE5
2
VEE
S5 16
O4
0.22uF
X7R
100V
0805
1
G4
R4
0
D70
OPT
C5
G5
OUT4
10
GATE4
9
SENSE4
0.22uF
X7R
100V
0805
2
VEE
C4
1
R3
0
D69
OPT
S4 15
OUT3
8
C3
O3
G3
7
GATE3
SENSE3
S3 14
OUT2
SENSE2
GATE2
5
R2
0
D68
OPT
0.22uF
X7R
100V
0805
1
R1
0
4
OUT1
3
0.22uF
X7R
100V
0805
1
2
2
2
D26
B1100
C2
O2
0.1uF
C1
G2
C26
SMAJ58A
BZT52C5V6-7-F
2KV
1808
100
O1
D1
GATE1
C19
1uF
100V
1206
D31
OPT
VEE
OUT3
OUT4
VEE
SENSE1
R27
OPT
1
R26
OPT
10
0805
C24
2.2nF
LTC4290
2
R35
C25
0.1uF
20
XIO1
11
XIO0
6
CAP2
25
AGND
12
J2-9
J2-10
2
XIO1
XIO0
VEE
G1
C
100
S1
R34
12k
1206
1/2W
OPT
R33
220k
1
VEE
30
VEE
33
VEE
40
VEE
35
NC
34
NC
32
NC
31
NC
41
VSSK
R32
220k
R23
100
S2 13
4
R21
OUT1
OUT2
R24
1
1
VEE
C22
1uF
100
R22
VEE
R16
R15
100
CT(3)CT(4)
Q13B
BC846AS
5
10
9
WURTH, 7490100143
8
Q13A 2
BC846AS
RX-
T1
3
6
R31
27k
0805
100
RD-
R30
27k
0805
C23
1uF
7
D5
GRN
XIO0
1
1
D4
GRN
XIO1
12
N/C
13
N/C
14
TX-
2
2
R14
100
APPROVED
J1
AD2
AD3
AD6
MSD#
2mm, 30 PIN CONNECTOR
2
23
J2-5
J2-6
VDD33
R13
REBUILD WITH CHANGE
2
1
D3
GRN
GP0
GP0
22
GP1
MSD
14
6
24
1
U1
MID
J2-4
DESCRIPTION
1
R29
560
D2
GRN
GP1
1
3
1
RESET#
MSD#
HI
LO
2
RESET
INT
AUTO
J2-3
R28
560
JP2
MID
MID
18
SCL
15
17
SDAOUT
SDAIN
16
5
AD6
4
3
2
REV
__
LTC4271
DND
AD2
2
AD1
DPD
10
HI
LO
AUTO
SDAOUT
SDAIN
SCL
INT#
AD2
AD3
AD6
AD0
DGND
CND
9
CPD
8
AD0
J2-2
1
25
20
VDD33
12
VDD33
19
CAP1
NC
7
13
DNC
D
R9
0
C21
0.1uF
AD3
R10
0
C20
1uF
JP1
AUTO
R11
0
21
AD1
J2-1
3
VDD33
VEE
NOTE 5
D75
OPT
VEE
VEE
OUT1
4 X 1.00
PSMN075-100MSE
G2
RB1-RB4 Q2
OUT2
B
4 X 1.00 PSMN075-100MSE
RC1-RC4
B
G3
Q3
OUT3
4 X 1.00
REQUIRED SURGE
COMPONENTS (BULK 58V
TVS and BULK CAPACITANCE)
ON MOTHER BOARD.
PSMN075-100MSE
RD1-RD4
G4
Q4
OUT4
4 X 1.00 PSMN075-100MSE
RE1-RE4
G5
Q5
OUT5
4 X 1.00
PSMN075-100MSE
RF1-RF4
G6
Q6
OUT6
4 X 1.00
PSMN075-100MSE
RG1-RG4
G7
Q7
OUT7
4 X 1.00 PSMN075-100MSE
RH1-RH5
VEE
G8
Q8
OUT8
A
4 X 1.00
A
PSMN075-100MSE
CUSTOMER NOTICE
NOTE: UNLESS OTHERWISE SPECIFIED
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.
1. ALL SENSE RESISTORS TIE TO VEE AT ONE COMMON POINT.
2. VSSK CONNECTS TO THE COMMON SENSE RESISTOR VEE POINT THROUGH AN ISOLATED KELVIN SENSE TRACE.
3. ONE S1B PROTECTION DIODE FROM VEE TO OUTn AND ONE S1B PROTECTION DIODE FROM OUTn TO AGND SHOWN ON MOTHER BOARD.
4. ALL RESISTORS AND CAPACITORS ARE 0603.
5. OPTIONAL REPLACE R1- R8 WITH 10 OHMS AND D68 - D75 WITH BAT41JFILM FOR INCREASED SURGE PROTECTION.
5
4
APPROVALS
PCB DES.
KIM T.
APP ENG.
DILIAN R.
TECHNOLOGY
TITLE: SCHEMATIC
8-PORT PSE DAUGHTER CARD WITH DIGITAL ISOLATION
SIZE
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
N/A
SCALE = NONE
DATE:
IC NO.
LTC4290BIUJ, LTC4271IUF
DEMO CIRCUIT 1842B
Tuesday, August 18, 2015
1
SHEET 1
REV.
1
OF 1
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