LM5073 Datasheet | National Semiconductor

Description The LM5073 Powered Device (PD) interface provides a high performance solution that is fully pliant to IEEE 802.3af for a PD connecting into Power over Ethernet (Po E) 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 pliant 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. - - - - - - - - - Programmable DC Current Limit up to 800 m A 100V, 0.7Ω Hot Swap MOSFET Integrated PD Signature Resistor Integrated Po E Input UVLO Inrush Current Limit PD Classification Capability Thermal Shutdown Protection Line Over Voltage Protection plementary Open Drain Outputs for Controlling a DCDC Converter - Power Good Indicator Applications - IEEE 802.3af pliant Po E Powered Devices - Non-pliant, Application Specific Devices - Higher Power Ethernet Powered Devices Features PD Interface - Fully pliant IEEE 802.3af PD Interface - Versatile Auxiliary Power Options - 13V Minimum Front Auxiliary Power Range - 9V Minimum Rear Auxiliary Power Range Packages - TSSOP-14 EP (Exposed Pad) Simplified Application Diagram © 2007 National Semiconductor Corporation .national. Connection Diagram 14 Lead TSSOP-EP Ordering Information Order Number LM5073MH LM5073MHX Package Type TSSOP-14EP TSSOP-14EP NSC Package Drawing MXA14A MXA14A Supplied As 94 Units per Rail 2500 Units on Tape and Reel Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Name UVLORTN UVLO VIN RCLASS FAUX DCCL VEE NC RTN NC n PGOOD n SD SD...