Features
PD Interface
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Fully Compliant IEEE 802.3af PD Interface
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Versatile Auxiliary Power Options
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13V Minimum Front Auxiliary Power Range
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9V Minimum Rear Auxiliary Power Range
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Programmable DC Current Limit up to 800 mA
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100V, 0.7Ω Hot Swap MOSFET
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Integrated PD Signature Resistor
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Integrated PoE Input UVLO
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Inrush Current Limit
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PD Classification Capability
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Thermal Shutdown Protection
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Line Over Voltage Protection
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Complementary Open Drain Outputs for Controlling a DC-DC Converter
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Power Good Indicator
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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
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IEEE 802.3af Compliant PoE Powered Devices
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Non-Compliant, Application Specific Devices
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Higher Power Ethernet Powered Devices
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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
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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
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