TPS23861PW

Overview

The TPS23861PW is a single-port IEEE 802.3at PoE+ Powered Device (PD) controller with an integrated 60V, 4A synchronous buck converter. It supports Class 0 through Class 4 power classification and includes programmable input current limit and output voltage monitoring. The device features a wide input voltage range of 37.5V to 57V, ensuring compatibility with standard PoE infrastructure while providing efficient power conversion for downstream loads.

Feature Summary

• Integrated high-efficiency synchronous buck converter for direct PoE power delivery
• Supports full IEEE 802.3at PoE+ classification levels from Class 0 to Class 4
• Includes programmable input current limiting and comprehensive protection mechanisms

Applications

• Wireless access points requiring PoE+ power
• IP cameras and video surveillance systems
• Industrial IoT gateways and sensors

Procurement Notes

Verify the package type matches your PCB footprint requirements. Confirm that the specific suffix indicates the correct tape and reel or tube packaging option if applicable. Ensure the operating temperature range aligns with your environmental specifications before finalizing procurement orders.

Selection Notes

Select this component when a single-port PoE+ solution with integrated power conversion is required. It is suitable for designs needing precise power management and classification without external inductors or complex bias circuits. Consider thermal performance and layout constraints associated with the PW package.

Part Context

This part belongs to Texas Instruments' TPS2386x family of PoE PD controllers. It is designed to simplify Power over Ethernet implementations by combining classification logic with power conversion in a single IC, reducing bill of materials count and board space compared to discrete solutions.

Replacement Considerations

Check for pin-compatible alternatives within the same family, such as the TPS23860 or TPS23862, depending on whether single or dual port functionality is needed. Verify that any substitute maintains IEEE 802.3at compliance and similar electrical characteristics.