LM5073 - 100V Power Over Ethernet PD Interface with Aux Support

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

Datasheet	Packaging	Samples & Pricing	Eval. Boards	Reliability	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

Parameters Values

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

Typical Performance

*click for larger image

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

Additional Resources

Design Tools

Application Notes

Block Diagram

*click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
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 Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Weeks

Qty

$US each

LM5073EVAL

100V Power Over Ethernet PD Interface with Aux Support

Full production

N/A

$72.00

8 weeks

N/A

LM5073HE-EVAL

LM5073HE (High Efficiency) 100V Power-Over-Ethernet PD Interface with Active Bridge

Full production

N/A

$75.00

8 weeks

N/A

LM5073MH

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.30

rail
of
94

NSUZXYTT
LM5073
MH

6 weeks

500

LM5073MHX

TSSOP EXP PAD

NOPB

260

RoHS

Download

Full production

N/A

1K+

$1.30

reel
of
2500

NSUZXYTT
LM5073
MH

8 weeks

5000

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 R_DS(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.

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.

For more information on Reliability Metrics, please click here.

Design Tools

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

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Application Notes

Title	Size in Kbytes	Date
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

If you have trouble printing or viewing PDF file(s), see Printing Problems.

More Application Notes

Title	Size in Kbytes	Date
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 7-Nov-2009]