9
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
OUT TO PHY
37V - 57V
IN FROM PSE
VPORTP
VPORTN
PWRGD
SIZE
DATE:
.V
ER
.
ON
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
ADI 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 ADI APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ADI AND
SCHEMATIC
SUPPLIED FOR USE WITH ADI PARTS.
SCALE = NONE
www.analog.com
1
Thursday, November 29, 2018
2
2
IEEE 802.3bt COMPLIANT, LTPoE++
ERIC H.
N/A
LT4293IDD, LT4321IUF DEMO CIRCUIT 2911A
KIM T.
INTEROPERABLE POWERED DEVICE
SIZE
DATE:
.V
ER
.
ON
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
ADI 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 ADI APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ADI AND
SCHEMATIC
SUPPLIED FOR USE WITH ADI PARTS.
SCALE = NONE
www.analog.com
1
Thursday, November 29, 2018
2
2
IEEE 802.3bt COMPLIANT, LTPoE++
ERIC H.
N/A
LT4293IDD, LT4321IUF DEMO CIRCUIT 2911A
KIM T.
INTEROPERABLE POWERED DEVICE
SIZE
DATE:
.V
ER
.
ON
CI
SHEE
T
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
CUSTOMER NOTICE
ADI 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 ADI APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ADI AND
SCHEMATIC
SUPPLIED FOR USE WITH ADI PARTS.
SCALE = NONE
www.analog.com
1
Thursday, November 29, 2018
2
2
IEEE 802.3bt COMPLIANT, LTPoE++
ERIC H.
N/A
LT4293IDD, LT4321IUF DEMO CIRCUIT 2911A
KIM T.
INTEROPERABLE POWERED DEVICE
RT6 75
Q8 PSMN075-100MSE
6
4
5
8
7
1
2
3
RT2 75
VPORTP
RT8 75
J2
SS-7188S-A-NF
1 2 3 4 5 6 7 8
9
10
RT5 75
CT4 0.01uF 100V 0805S
Q9 PSMN075-100MSE
6
4
5
8
7
1
2
3
C5 0.047uF 100V
Q4 PSMN075-100MSE
6
4
5
8
7
1
2
3
CG1 1000pF 2KV 1808
T1
749022016
D-
3
TD
1
X+
14
X-
16
D+
11
D-
9
D-
6
D+
8
X-
13
TD
4
D+
5
D+
2
TX
15
TD
10
TD
7
D-
12
TX
18
X+
17
X-
19
TX
21
X+
20
X-
22
TX
24
X+
23
CG2 1000pF 2KV 1808
U2
LT4321IUF
TG36
1
IN36
2
IN45
3
TG45
4
TG78
5
IN78
6
BG78
7
BG45
8
OUTP
12
EN
11
EN
10
OUTN
9
TG12
16
IN12
15
BG12
14
BG36
13
EP
17
CT2 0.01uF 100V 0805S
Q3 PSMN075-100MSE
6
4
5
8
7
1
2
3
RT7 75
RT1 75
RT4 75
CT3 0.01uF 100V 0805S
CT1 0.01uF 100V 0805S
Q6 PSMN075-100MSE
6
4
5
8
7
1
2
3
Q7 PSMN075-100MSE
6
4
5
8
7
1
2
3
R18 0
Q5 PSMN075-100MSE
6
4
5
8
7
1
2
3
RT3 75
Q10 PSMN075-100MSE
6
4
5
8
7
1
2
3
J1
SS-7188S-A-NF
1 2 3 4 5 6 7 8
9
10
TG36
POE_CT36
POE_CT45
TG45
TG12
BG12
TG36
BG36
TG45
BG45
TG78
BG78
POE_CT36
POE_CT45
POE_CT78
VPORTP
VPORTN
TG78
POE_CT78
BG78
BG45
TG12
POE_CT12
BG12
BG36
POE_CT12
POE_CT78
POE_CT45
POE_CT36
POE_CT12
