TPS2379DDA

Overview

The TPS2379DDA is a Powered Device (PD) interface component manufactured by Texas Instruments, designed for high-power Power over Ethernet applications. It complies with the IEEE 802.3at standard to support Class 4 power delivery. The device operates within a supply voltage range of 0 V to 57 V and features an internal current limit of 850 mA. Its maximum on-resistance is specified at 750 mOhms, ensuring efficient power transfer. The component functions reliably across an extended temperature range from -40°C to +85°C. It utilizes an SO-PowerPad-8 surface-mount package and draws a typical operating supply current of 285 uA.

Feature Summary

• Complies with IEEE 802.3at standards for high-power powered device interfaces
• Integrates an internal power switch with defined current limiting capabilities
• Supports operation across wide industrial temperature ranges

Applications

• High-power Powered Device (PD) interface circuits
• IEEE 802.3at compliant network endpoint devices
• Power management in PoE-enabled LAN infrastructure

Procurement Notes

Verify that the specific suffix 'DDA' corresponds to the tube packaging configuration rather than the tape-and-reel variant. Confirm RoHS compliance status through official documentation. Ensure the procurement channel provides valid traceability for the Texas Instruments manufacturer identification. Validate that the received components match the SO-PowerPad-8 physical outline specifications.

Selection Notes

Select this component when designing systems requiring IEEE 802.3at compliance for powered devices. Consider the 850 mA current limit and 750 mOhm on-resistance for power loss calculations. Evaluate the SO-PowerPad-8 package for thermal dissipation requirements. Compare against other series members if different current limits or packaging formats are necessary for the specific application constraints.

Part Context

This part belongs to the TPS2379 series of power switch ICs dedicated to Power over Ethernet applications. It serves as a critical interface between the Ethernet link and the local power distribution system. The component integrates the necessary control logic and switching elements to manage power extraction from the PSE according to established industry standards.

Replacement Considerations

The TPS2379DDAR is the tape-and-reel equivalent of this component. Verify package compatibility and functional equivalence before substitution.