Features PD Interface • Fully Compliant IEEE 802.3af PD Interface • Versatile Auxiliary Power Options • 13V Minimum Front Auxiliary Power Range • 9V Minimum Rear Auxiliary Power Range • Programmable DC Current Limit up to 800 mA • 100V, 0.7Ω Hot Swap MOSFET • Integrated PD Signature Resistor • Integrated PoE Input UVLO • Inrush Current Limit • PD Classification Capability • Thermal Shutdown Protection • Line Over Voltage Protection • Complementary Open Drain Outputs for Controlling a DC-DC Converter • Power Good Indicator Description The LM5073 Powered Device (PD) interface provides a high performance solution that is fully compliant to IEEE 802.3af for a PD connecting into Power over Ethernet (PoE) networks. The LM5073 provides the flexibility for the PD to also accept power from unregulated auxiliary sources such as AC adapters and solar cells in a variety of configurations. The low RDS(ON) PD interface hot swap MOSFET and programmable DC current limit extend the range of LM5073 applications up to twice the power level of IEEE 802.3af compliant devices. The 100V maximum voltage rating simplifies selection of the transient voltage suppressor that protects the PD from network transients. Control outputs for a separate DC-DC converter are provided to allow freedom to select the best DC-DC converter topology for the particular application. Applications • IEEE 802.3af Compliant PoE Powered Devices • Non-Compliant, Application Specific Devices • Higher Power Ethernet Powered Devices

Also Recommended LM5070▲ Integrated Power Over Ethernet PD Interface And PWM Controller LM5071▲ Compatible With Auxilary Power Sources, Such As 12 V AC Adapters LM5072▲ 100V PoE PD With Integrated PWM Controller MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application *click for larger image	Block Diagram *click for larger image
Typical Performance *click for larger image

Datasheet

Title		Size	Date	Other Language
	LM5073 100V Power Over Ethernet PD Interface with Aux Support	395 Kbytes	9-Mar-07

Featured Application Notes

Title		Size	Date	Other Language
	AN-1574: Application Note 1574 LM5073 Evaluation Board	464 Kbytes	24-Apr-07
	AN-1875: Application Note 1875 LM5073HE Evaluation Board With Active Bridge	230 Kbytes	2-Jul-08

More Application Notes

Title		Size	Date	Other Language
	AN-1474: Application Note 1474 The LM507X Family of PoE Devices: Frequently Asked Questions (FAQs)	457 Kbytes	10-May-06	中文
	AN-1455: Application Note 1455 LM5072 Evaluation Board	708 Kbytes	30-Mar-06	中文
	AN-1430: Application Note 1430 LM5071 Evaluation Board	738 Kbytes	4-Jan-06
	AN-1358: Application Note 1358 LM5070 'AE' Evaluation Board	787 Kbytes	27-Jan-05
	AN-1408: Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865	1072 Kbytes	10-Jan-06	中文
	AN-1521: Application Note 1521 POEPHYTEREV-I / -E User Guide	14913 Kbytes	4-Apr-08
	AN-1346: Application Note 1346 LM5070 'HE' Evaluation Board	550 Kbytes	13-Mar-06	中文

Design Tools

Title	Size	Date
Article - Get The Scoop On How To Power Share Between Isolated PoE Channels
Article - High PoE Made Easy

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM5073MH	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5073MHX	ABCD150XV2	0	3601	0	0	1155496	4	327875145

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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