The LM5073MHX from Texas Instruments is a feature-rich Power over Ethernet (PoE) powered device (PD) interface and pulse-width modulation (PWM) controller. This integrated solution facilitates the design of high-power applications compliant with the IEEE 802.3at standard, including the legacy IEEE 802.3af specification.

Key Features

• Integrated PoE Interface: The LM5073MHX simplifies the design process by integrating PoE PD interface and DC-DC controller functionality into a single chip, reducing the number of components required and streamlining the design of Ethernet-powered devices.
• Support for High Power Applications: Designed to meet the demands of high-power devices, the LM5073MHX supports applications requiring up to 25.5W of power, in accordance with the IEEE 802.3at standard, as well as supporting lower-power IEEE 802.3af devices.
• Adjustable Output Voltage: The PWM controller allows for a wide range of output voltages, providing flexibility in powering various types of loads from a standard PoE source.
• Advanced Protection Features: The device includes over-temperature, over-current, and under-voltage lockout protections, ensuring reliable operation and safeguarding against potential damage from electrical anomalies.
• Enhanced Thermal Performance: The LM5073MHX is available in a thermally enhanced 20-pin HTSSOP package, which aids in heat dissipation and allows for operation in demanding thermal environments.

Applications

The versatility of the LM5073MHX makes it suitable for a diverse range of applications, including:

• VoIP Phones
• Wireless Access Points
• Security Cameras
• RFID Readers
• Industrial Controls
• Networked Appliances

Conclusion

With its integrated design, support for high-power applications, and robust protection features, the LM5073MHX from Texas Instruments stands out as a comprehensive solution for powering Ethernet-connected devices. Its versatility and reliability make it an ideal choice for designers looking to create efficient, high-performance PoE systems.