PoE Powered Device (PD)

Analog Devices powered device (PD) controllers support multiple power levels of power over Ethernet: IEEE PoE (13W), IEEE PoE+ (25.5 W), IEEE PoE++ (71 W), and ADI LTPoE++ (up to 90 W) standard. PD controllers are ultimately responsible for providing the correct signature and classification to power sourcing equipment (PSE), so that PSEs source the right amount of power to PDs over the Ethernet cables. Some of our PD controllers integrate efficient dc-to-dc converters to simplify designs, while our other PD controllers give designers the ability to choose their own dc-to-dc converters, which helps designers achieve unique cost-efficiency requirements.
Product Selection Table

PoE Powered Device (PD)

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SortOrderPart## of ChannelsPoE TypeTopologyMax Power
(typ)
(W)
IEEE-Compliant ClassificationIEEE-Compliant DetectionCommentsPrice (1000+)
($ US)
1LT4294 1 1, 2, 3, 4- 71 Five Event, Four Event, One Event, Three Event, Two Event Yes (Internal 25k resistor) IEEE 802.3bt PD Interface Controller $1.95 (LT4294IDD#PBF)
2LT4295 1 1, 2, 3, 4 Flyback, Forward 71 Five Event, Four Event, One Event, Three Event, Two Event Yes (Internal 25k resistor) IEEE 802.3bt PD Interface with Forward/Flyback Controller $2.75 (LT4295IUFD#PBF)
3LT4276 1 1, 2, LTPoE++ Flyback, Forward 90 One Event, Two Event Yes (Internal 25k resistor) LTPoE++/PoE+/PoE PD Forward/Flyback Controller $2.25 (LT4276CIUFD#PBF)
4LT4275 1 1, 2, LTPoE++- 90 One Event, Two Event Yes (Internal 25k resistor) LTPoE++/PoE+/PoE PD Controller $1.45 (LT4275CIDD#PBF)
5LTC4278 1 2 Flyback 25.5 One Event, Two Event Yes (Internal 25k resistor) IEEE 802.3at PD with Synchronous No-Opto Flyback Controller and 12V Aux Support $2.60 (LTC4278CDKD#PBF)
6LTC4269-2 1 2 Forward 25.5 One Event, Two Event Yes (Internal 25k resistor) IEEE 802.3at High Power PD and Sychronous Forward Controller with AUX Support $2.60 (LTC4269CDKD-2#PBF)
7LTC4269-1 1 2 Flyback 25.5 One Event, Two Event Yes (Internal 25k resistor) IEE 802.3at PD with Synchronous No-Opto Flyback Controller $2.40 (LTC4269CDKD-1#PBF)
8LTC4265 1 2- 25.5 One Event, Two Event Yes (Internal 25k resistor) IEEE 802.3 at High Power PD Interface Controller with 2-Event Classification Recognition $1.80 (LTC4265CDE#PBF)
9LTC4267-3 1 1 Flyback 13 One Event Yes (Internal 25k resistor) Power over Ethernet IEEE 802.3af PD Interface with Integrated 300kHz Switching Regulator $2.10 (LTC4267CGN-3#PBF)
10LTC4267-1 1 1 Flyback 13 One Event Yes (Internal 25k resistor) Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator $2.10 (LTC4267CGN-1#PBF)
11LTC4267 1 1 Flyback 13 One Event Yes (Internal 25k resistor) Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator $2.10 (LTC4267CGN#PBF)
12LTC4257-1 1 1- 13 One Event Yes (Internal 25k resistor) 100V, 400mA internal FET, dual current limit for legacy applications $1.75 (LTC4257CS8-1#PBF)
13LTC4257 1 1- 13 One Event Yes (Internal 25k resistor) 100V, 400mA internal FET $1.65 (LTC4257CS8#PBF)