LM5072MH-50

Overview

The LM5072MH-50/NOPB is an integrated Power Over Ethernet (PoE) Powered Device (PD) interface and PWM controller designed for high-voltage applications. It supports the IEEE 802.3af standard with a maximum input voltage of 50V. The device integrates a synchronous buck DC/DC converter capable of delivering up to 12.95W of output power. Key electrical parameters include a supply voltage range of 9V to 70V, a maximum supply current of 2mA, and an operating temperature range from -40°C to +125°C. It utilizes a 16-pin HTSSOP package.

Feature Summary

• Integrates PoE PD interface logic with a synchronous buck PWM controller in a single component
• Supports auxiliary power delivery alongside primary data and power transmission
• Features internal high-side and low-side switches for efficient step-down conversion

Applications

• IEEE 802.3af compliant network endpoints
• Wireless access points requiring integrated power management
• IP cameras and surveillance equipment
• Industrial IoT nodes powered via Ethernet

Procurement Notes

Verify the specific suffix indicates the 50V rating variant. Confirm RoHS compliance status through official documentation. Ensure the package matches the required 16-HTSSOP footprint. Check for any recent product change notices affecting pinout or specifications.

Selection Notes

Select this component for designs requiring combined PoE interface and regulation. It simplifies bill of materials by integrating control and power stages. Consider thermal performance due to the integrated switch topology. Verify compatibility with upstream PSE controllers regarding classification protocols.

Part Context

Part of the LM5072 family of integrated PoE controllers. Designed to replace discrete solutions combining classification logic and DC/DC converters. Offers a compact alternative to multi-component power architectures for networked devices.

Replacement Considerations

LM5072MHX-80/NOPB offers similar functionality but supports higher input voltages up to 80V.