LM5071 PoE PD controller is an integrated circuit that can power devices connected to PoE networks. It can be powered by a 12V AC adapter or an Ethernet network.
The LM5071 is a complete integrated solution designed for Powered Devices (PD) connecting into Power over Ethernet (PoE) systems. It specifically supports PDs that must accept power from auxiliary sources, such as AC adapters, activating the PWM controller when network power is unavailable. The device integrates an 80V, 400mA line connection switch and associated control for a fully IEEE 802.3af compliant interface.
| Line Connection Switch Voltage | 80V |
|---|---|
| Switch Current Rating | 400 mA |
| Maximum Duty Cycle (-80 Device) | 80% |
| Maximum Duty Cycle (-50 Device) | 50% |
| Thermal Shutdown Temperature | 165 C |
The AUX pin allows startup via an auxiliary power source, activating the PWM controller when AC adapter power is connected.
Yes, it is designed for PDs that must accept power from auxiliary sources such as 12V ac adapters.
The device is available in LM5071MT-50 (50% duty cycle limit) and LM5071MT-80 (80% duty cycle limit).