Introducing the LM5071MT-80 Power Over Ethernet (PoE) Controller

The LM5071MT-80 is a versatile integrated Power over Ethernet (PoE) Powered Device (PD) interface and pulse-width modulation (PWM) controller designed by Texas Instruments. This highly efficient device is capable of delivering power up to 80 watts over a standard Ethernet cable, facilitating the deployment of modern network devices without the need for additional power supplies.

Optimized Power Solutions for Networked Devices

With the LM5071MT-80, Texas Instruments provides a compact and reliable solution for a wide range of applications, including IP phones, wireless access points, and security cameras. The product integrates a PD interface compliant with the IEEE 802.3at standard, ensuring compatibility with Power Sourcing Equipment (PSE) and smooth operation in various network configurations.

Advanced Features for Enhanced Performance

• Integrated PWM Controller: The LM5071MT-80 includes a PWM controller that supports various topologies, such as flyback, forward, and buck-boost converters, offering flexibility in designing power supply circuits.
• High Power Capability: This device can handle power levels up to 80 watts, making it suitable for applications that require substantial power delivery over Ethernet cables.
• Programmable Under-Voltage Lockout (UVLO): The adjustable UVLO allows for customized power management and ensures that the system operates within safe voltage levels.
• Over-Temperature Protection: The built-in thermal protection feature safeguards the device against excessive heat, contributing to system reliability and longevity.
• Signature Resistor Detection: The LM5071MT-80 supports PoE signature detection, which is a critical function for PDs to communicate their presence to PSEs.

Robust and Efficient Design

The LM5071MT-80 is housed in a compact 16-pin surface-mount TSSOP package, making it suitable for space-constrained applications. Its high level of integration reduces external component count, which not only simplifies the design process but also enhances system reliability. The device's efficient operation translates to lower power dissipation, which is crucial for maintaining optimal performance in PoE systems.

Overall, the LM5071MT-80 from Texas Instruments is an excellent choice for developers looking to implement PoE capabilities with high efficiency, reliability, and flexibility in their networked devices.