PoE Power Sourcing Equipment (PSE)

Analog Devices power sourcing equipment (PSE) controllers support multiple power levels of power over Ethernet: IEEE PoE (13W, 802.3af), IEEE PoE+ (25.5W, 802.3at), IEEE PoE++ (71.3W, 802.3bt), and ADI LTPoE++ (90W) standard. PSE controllers are responsible for detecting and classifying powered devices (PDs), as well as sourcing the right amount of power to PDs over Ethernet cables. Our latest generation PSE controllers are IEEE compliant, use 0.15 Ω sense resistors to lower power dissipation, and use a high reliability 4-point PD detection scheme to eliminate false PD detections. External MOSFETs, a scalable cable discharge protection scheme, an 80 V abs max rating on all analog pins, and overtemperature protection all ensure robust operation.
Product Selection Table

PoE Power Sourcing Equipment (PSE)

  Hold Shift Key for secondary sorting
SortOrderPart#Chipset Part Number# of PortsPoE StandardPoE TypeMax Power
(typ)
(W)
Disconnection MethodI2C InterfacePrice (1000+)
($ US)
1LTC4291-1 LTC4292 4 IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt 1, 2, 3, 4 71 DC Yes $2.00 (LTC4291IUF-1#PBF)
2LTC4292 LTC4291-1 4 IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt 1, 2, 3, 4 71 DC Yes $6.00 (LTC4292IUJ#PBF)
3LTC4291 LTC4292 4 IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt 1, 2, 3, 4 71 DC Yes $2.00 (LTC4291IUF#PBF)
4LTC4279- 1 IEEE 802.3af, IEEE 802.3at, LTPoE++ 1, 2, LTPoE++ 123 DC No $3.45 (LTC4279IS#PBF)
5LTC4290 LTC4271 8 IEEE 802.3af, IEEE 802.3at, LTPoE++ 1, 2, LTPoE++ 90 DC Yes $7.00 (LTC4290BIUJ#PBF)
6LTC4274C- 1 IEEE 802.3af, IEEE 802.3at 1 13 DC Yes $4.50 (LTC4274CIUHF#PBF)
7LTC4274A- 1 IEEE 802.3af, IEEE 802.3at, LTPoE++ 1, 2, LTPoE++ 90 DC Yes $5.40 (LTC4274AIUHF-1#PBF)
8LTC4271 LTC4270, LTC4290 12 IEEE 802.3af, IEEE 802.3at, LTPoE++ 1, 2, LTPoE++ 90 DC Yes $3.00 (LTC4271IUF#PBF)
9LTC4270 LTC4271 12 IEEE 802.3af, IEEE 802.3at, LTPoE++ 1, 2, LTPoE++ 90 DC Yes $9.00 (LTC4270BIUKG#PBF)
10LTC4266C- 4 IEEE 802.3af 1 13 DC Yes $5.00 (LTC4266CIUHF#PBF)
11LTC4266A- 4 IEEE 802.3af, IEEE 802.3at, LTPoE++ LTPoE++ 90 DC Yes $6.00 (LTC4266AIUHF-1#PBF)
12LTC4274- 1 IEEE 802.3af, IEEE 802.3at 2 25.5 DC Yes $4.50 (LTC4274CUHF#PBF)
13LTC4266- 4 IEEE 802.3af, IEEE 802.3at 2 25.5 DC Yes $5.00 (LTC4266CGW#PBF)
14LTC4263-1- 1-- 30 DC or AC No $2.95 (LTC4263CDE-1#PBF)
15LTC4263- 1 IEEE 802.3af 1 12.95 DC or AC No $2.95 (LTC4263CDE#PBF)