LM5073 - 100V Power Over Ethernet PD Interface with Aux Support from the PowerWise® Family

Datasheet Packaging Samples & Pricing Eval. Boards Design Tools Application Notes Knowledge Base

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

General 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. More...


Applications

• IEEE 802.3af Compliant PoE Powered Devices
• Non-Compliant, Application Specific Devices
• Higher Power Ethernet Powered Devices
  Typical Application
*click for larger image


Parametric Table     expand
Parametric Table    collapse
Output Power 25 Watt
Input Min Voltage 9 Volt
Input Max Voltage 100 Volt
Special Features IEEE 802.3af Compliant PD Interface, High Power PD Interface, 100V Hot Swap MOSFET, Adjustable DC Current Limit, Aux Power Interface
Output Power 25 Watt
Topology Any DC-DC Converter Toplogy
Flyback Yes
Inverting Yes
Step-Up Yes
Step-Down Yes
RegType Hot Swap Controller
Temperature Min -40 deg C
Temperature Max 125 deg C
PowerWise Yes
View Using Catalog


Typical Performance

*click for larger image


  Also Recommended
LM5070Integrated Power Over Ethernet PD Interface And PWM Controller
LM5071Compatible With Auxilary Power Sources, Such As 12 V AC Adapters
LM5072100V PoE PD With Integrated PWM Controller

Additional Resources

Design Tools (see below)

Application Notes (see below)


Block Diagram

*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM5073 100V Power Over Ethernet PD Interface with Aux Support 395 Kbytes 9-Mar-07 Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM5073EVAL100V Power Over Ethernet PD Interface with Aux SupportFull productionN/A
 
Buy Now 		1+$72.001-
8 weeksN/A
LM5073HE-EVALLM5073HE (High Efficiency) 100V Power-Over-Ethernet PD Interface with Active BridgeFull productionN/A
 
Buy Now 		1+$75.001-
8 weeksN/A
LM5073MHTSSOP EXP PAD14NOPB1260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.30rail
of
94		NSUZXYTT
LM5073
MH
6 weeks500
LM5073MHXTSSOP EXP PAD14NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.30reel
of
2500		NSUZXYTT
LM5073
MH
6 weeks5000

General 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.

Design Tools

TitleSize in Kbytes Date Click link below to Download    
Get The Scoop On How To Power Share Between Isolated PoE Channels     View    
High PoE Made Easy     View    

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Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1574: Application Note 1574 LM5073 Evaluation Board 464 Kbytes 24-Apr-07 Download
AN-1875: Application Note 1875 LM5073HE Evaluation Board With Active Bridge 230 Kbytes 2-Jul-08 Download

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More Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1474: Application Note 1474 The LM507X Family of PoE Devices: Frequently Asked Questions (FAQs) 457 Kbytes 10-May-06 Download
AN-1474 (Chinese): Application Note 1474 The LM507X Family of PoE Devices: Frequently Asked Questions (FAQs)
 388 Kbytes  
AN-1455: Application Note 1455 LM5072 Evaluation Board 708 Kbytes 30-Mar-06 Download
AN-1455 (Chinese): Application Note 1455 LM5072 Evaluation Board
 600 Kbytes  
AN-1430: Application Note 1430 LM5071 Evaluation Board 738 Kbytes 4-Jan-06 Download
AN-1358: Application Note 1358 LM5070 'AE' Evaluation Board 787 Kbytes 27-Jan-05 Download
AN-1408: Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865 1072 Kbytes 10-Jan-06 Download
AN-1408 (Chinese): Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865
 697 Kbytes  
AN-1521: Application Note 1521 POEPHYTEREV-I / -E User Guide 14913 Kbytes 4-Apr-08 Download
AN-1346: Application Note 1346 LM5070 'HE' Evaluation Board 550 Kbytes 13-Mar-06 Download
AN-1346 (Chinese): Application Note 1346 LM5070 'HE' Evaluation Board
 399 Kbytes  

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[Information as of 3-Jul-2009]