LM5072MH-50/NOPB

Overview

The LM5072MH-50/NOPB is an integrated Power Over Ethernet (PoE) Powered Device (PD) interface and PWM controller compliant with the IEEE 802.3af standard. It supports a supply voltage range of 9V to 70V and delivers a maximum power output of 12.95W. The device features internal switches and auxiliary power support, housed in a 16-PowerTSSOP package with a width of 4.40mm. It operates within a temperature range of -40°C to 125°C and draws a maximum supply current of 2mA.

Feature Summary

• Integrates PoE PD interface logic with a PWM controller for efficient power conversion
• Supports auxiliary power delivery alongside main data channel power
• Includes internal switching elements to reduce external component count

Applications

• IEEE 802.3af compliant network endpoint devices
• VoIP telephones requiring integrated power management
• Wireless access points utilizing PoE infrastructure
• Industrial sensors connected via Ethernet networks

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS3 compliance status and check for specific lot traceability requirements. Ensure storage conditions adhere to moisture sensitivity level guidelines prior to assembly. Review the latest product change notification for any design or specification updates that may affect integration.

Selection Notes

Select this component for designs requiring a single-chip solution for 802.3af powered devices. It is suitable for applications needing auxiliary power generation from the PoE input. Consider the 16-pin HTSSOP package constraints for PCB layout. Evaluate thermal performance based on the 12.95W maximum power rating under expected ambient conditions.

Part Context

This part belongs to the LM5072 family of integrated PoE controllers developed by Texas Instruments. It succeeds earlier National Semiconductor designs and serves as a core component for managing power reception and conversion in Ethernet-powered systems. The device simplifies design by combining interface detection with DC/DC control functions.

Replacement Considerations

LM5072MHX-80/NOPB is a documented variant within the same family offering similar functionality.