Power-over-Ethernet (PoE) Interface Controllers

Analog Devices’ power over Ethernet (PoE) products encompass a wide variety of power sourcing equipment (PSE) and powered device (PD) controllers that support multiple power levels: IEEE PoE (13W, 802.3af), IEEE PoE+ (25.5W, 802.3at), IEEE PoE++ (71.3W, 802.3bt), and ADI LTPoE++ (90W) standard. Our PSE and PD controllers provide complete PoE solutions and use external components such as power MOSFETs and sense resistors to lower resistance in the power path—minimizing heat dissipation and maximizing power efficiency. In addition, our robust cable discharge protection scheme, a high abs max rating on all analog pins, wide operating temperature, and overtemperature protection all make for extremely rugged PoE solutions that meet IEC61000 cable discharge requirements that far exceed ESD and cable ESD testing levels.

Power-over-Ethernet (PoE) Interface Controllers

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SortOrderPart#Power Device Features# of ChannelsPoE TypeMax Power
(typ)
(W)
IEEE-Compliant DetectionIEEE-Compliant ClassificationIEEE-Compliant DisconnectionPrice (1000+)
($ US)
1LTC4292 PSE 4 1, 2, 3, 4 71 4-Point Five Event, Four Event, LTPoE++, One Event, Three Event, Two Event DC-
2LTC4291 PSE 4 1, 2, 3, 4 71 4-Point Five Event, Four Event, LTPoE++, One Event, Three Event, Two Event DC-
3LT4294 PD 1 1, 2, 3, 4 71 Yes (Internal 25k resistor) Five Event, Four Event, One Event, Three Event, Two Event N/A-
4LTC4279 PSE 1 1, 2, LTPoE++ 123 4-Point LTPoE++, One Event, Two Event DC-
5LT4295 PD 1 1, 2, 3, 4 71 Yes (Internal 25k resistor) Five Event, Four Event, One Event, Three Event, Two Event--
6LT4276 PD 1 1, 2, LTPoE++ 90 Yes (Internal 25k resistor) One Event, Two Event N/A-
7LTC4290 & LTC4271 PSE 8 1, 2, LTPoE++ 90 4-Point LTPoE++, One Event, Two Event DC-
8LT4275 PD 1 1, 2, LTPoE++ 90 Yes (Internal 25k resistor) One Event, Two Event N/A-
9LTC4271 PSE 1------
10LTC4270 & LTC4271 PSE 12 1, 2, LTPoE++ 90 4-Point LTPoE++, One Event, Two Event DC-
11LTC4274 PSE 1 2 25.5 4-Point One Event, Two Event DC-
12LTC4278- 1 2 25.5 Yes (Internal 25k resistor) One Event, Two Event N/A-
13LTC4269-2 PD 1 2 25.5 Yes (Internal 25k resistor) One Event, Two Event N/A-
14LTC4269-1 PD 1 2 25.5 Yes (Internal 25k resistor) One Event, Two Event N/A-
15LTC4266 PSE 4 2 25.5 4-Point One Event, Two Event DC-
16LTC4265 PD 1 2 25.5 Yes (Internal 25k resistor) One Event, Two Event N/A-
17LTC4267-3 PD 1 1 13 Yes (Internal 25k resistor) One Event N/A-
18LTC4263-1 PSE 1- 30 2-Point One Event DC or AC-
19LTC4263 PSE 1 1 12.95 2-Point One Event DC or AC-
20LTC4267-1 PD 1 1 13 Yes (Internal 25k resistor) One Event N/A-
21LTC4267 PD 1 1 13 Yes (Internal 25k resistor) One Event N/A-
22LTC4257-1 PD 1 1 13 Yes (Internal 25k resistor) One Event N/A-
23LTC4257 PD 1 1 13 Yes (Internal 25k resistor) One Event N/A-