TPS2377D

Overview

The TPS2377D is a Powered Device controller compliant with IEEE 802.3af standards, designed for Power over Ethernet applications. It operates within a voltage range of 0 V to 57 V and supports a maximum output power of 12.95 W. The device features a current limit of 405 mA and a maximum on-resistance of 1 Ohm. It functions reliably across an operating temperature range from -40°C to +85°C. The component utilizes a surface-mount SOIC-8 package and draws a typical supply current of 240 uA.

Feature Summary

• Complies with IEEE 802.3af PoE Powered Device standards
• Integrated high-side power switch with fault protection
• Low quiescent current operation for energy efficiency

Applications

• IEEE 802.3af Powered Device implementations
• Power over Ethernet network infrastructure
• LAN powered equipment controllers

Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-8 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure design compatibility with standard IEEE 802.3af power sourcing equipment requirements.

Selection Notes

Select this component for designs requiring strict adherence to IEEE 802.3af specifications in a compact surface-mount form factor. Consider the SOIC-8 package constraints for thermal management and PCB layout. Evaluate the 405 mA current limit against downstream load requirements to ensure adequate headroom.

Part Context

This part belongs to the Texas Instruments TPS2377 series of PoE controllers. It serves as a Powered Device solution, distinct from Power Sourcing Equipment controllers. The series provides integrated switching and control capabilities for standard-compliant network devices.

Replacement Considerations

The TPS2376D is a related variant within the same family offering similar functionality. Verify pinout and parameter equivalence before substitution.