PoE+ Flyback Transformer Selection | IEEE 802.3at
For 25W PoE+ (IEEE 802.3at Type 2) flyback supplies. Match output voltage and ADI controller in the table below: ME35132 for LT4276 / LTC4269-1 (5V/5A), ME35201 for LTC4278 (12V/2A). Then download the datasheet or request a sample.
How to choose
Map output voltage and PD / flyback controller to a recommended part.
| Your need | Chipset | Recommended | |
|---|---|---|---|
| 25W PoE+, 5V / 5A output | ADI LT4276 / LTC4269-1 | ME35132 | Datasheet → |
| 25W PoE+, 12V / 2A output | ADI LTC4278 | ME35201 | Datasheet → |
| Power, voltage, or chipset not listed | Share schematic / chipset / rails for a custom sample | Contact → | |
Recommended parts
Key specs only — full electrical and mechanical data are in the PDF.
25W PoE+ flyback
ME35132 — 5V / 5A
250 kHz, 1500 Vrms isolation, 36–57 Vdc input, for ADI LT4276 / LTC4269-1, IEEE802.3at Type 2.
Datasheet
LT4276
LTC4269-1
25W PoE+ flyback
ME35201 — 12V / 2A
250 kHz, 1500 Vrms isolation, suited to 12V system rails, for ADI LTC4278, IEEE802.3at Type 2.
Datasheet
LTC4278