LM5070SD-50/NOPB

Overview

The LM5070SD-50/NOPB is a Power over Ethernet (PoE) controller compliant with the IEEE 802.3af standard, manufactured by Texas Instruments. It integrates a DC/DC converter and operates within a supply voltage range of 1.8V to 75V. The device utilizes a 16-WSON package measuring 5x5 mm and supports surface mount installation. It functions as a Powered Device (PD) controller with an internal switch and is rated for operation between -40°C and +125°C.

Feature Summary

• Integrates a single-channel PoE controller with an internal DC/DC converter for powered device applications
• Compliant with IEEE 802.3af standards for power delivery over Ethernet networks
• Features user-programmable under-voltage threshold and hysteresis settings
• Includes a dedicated fault current control loop for system protection

Applications

• Power over Ethernet powered devices requiring 802.3af compliance
• Integrated PD interface designs combining switching regulation and PoE logic
• Industrial or commercial network equipment utilizing wide input voltage ranges

Procurement Notes

Verify the specific suffix 'SD' corresponds to the 16-WSON package configuration when sourcing. Confirm RoHS compliance status via the manufacturer's latest documentation. Ensure the ordering part number matches the exact tape and reel specifications required for your assembly process. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component for applications requiring a combined PoE interface and DC/DC conversion in a compact footprint. The wide input voltage range accommodates various PoE source types. Consider the thermal performance of the WSON package for high-power density layouts. Verify that the internal switch capability meets the load requirements without external pass elements.

Part Context

This device belongs to the LM5070 family of integrated PoE controllers designed for efficient power delivery. It consolidates multiple functions typically found in separate components into a single IC. The series supports various packaging options to suit different board space constraints while maintaining standard PoE protocol adherence.

Replacement Considerations

The LM5070MTC-80 serves as a related variant within the same product family, offering alternative packaging and electrical characteristics. Verify functional equivalence regarding channel count and standard compliance before substitution.