PoE Power Sourcing Equipment (PSE)

Analog Devices power sourcing equipment (PSE) controllers support multiple power levels of power over Ethernet: IEEE PoE (13 W), IEEE PoE+ (25.5 W), and ADI LTPoE++ (up to 90 W) standards. 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 0.1 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## of ChannelsPoE TypeMax Power
(typ)
(W)
IEEE-Compliant DetectionIEEE-Compliant ClassificationIEEE-Compliant DisconnectionI2C InterfaceUS Price 1000 to 4999
($ US)
1LTC4279 1 1, 2, LTPoE++ 123 4-Point LTPoE++, One Event, Two Event DC No $3.45 (LTC4279IS#PBF)
2LTC4290 & LTC4271 8 1, 2, LTPoE++ 90 4-Point LTPoE++, One Event, Two Event DC Yes $7.00 (LTC4290CIUJ#PBF)
3LTC4271 1------ $3.00 (LTC4271IUF#PBF)
4LTC4270 & LTC4271 12 1, 2, LTPoE++ 90 4-Point LTPoE++, One Event, Two Event DC Yes $9.00 (LTC4270CIUKG#PBF)
5LTC4274 1 2 25.5 4-Point One Event, Two Event DC Yes $4.50 (LTC4274CUHF#PBF)
6LTC4266 4 2 25.5 4-Point One Event, Two Event DC Yes $5.00 (LTC4266CGW#PBF)
7LTC4263-1 1- 30 2-Point One Event DC or AC No $2.95 (LTC4263CDE-1#PBF)
8LTC4263 1 1 12.95 2-Point One Event DC or AC No $2.95 (LTC4263CS#PBF)