TPS23851DCE

Overview

The TPS23851DCE is a quad-port Power Sourcing Equipment (PSE) controller designed for Ethernet applications. It supports IEEE 802.3af and 802.3at standards, enabling power insertion onto Ethernet cables. The device operates within a wide voltage range of -70 V to 300 mV and functions at temperatures from -20°C to +125°C. Packaged in a 36-pin SSOP, it manages up to 34.2W per port without internal switches.

Feature Summary

• Quad-port architecture for simultaneous management of multiple Ethernet connections
• Compliance with IEEE 802.3af and 802.3at PoE standards
• Wide operating voltage range suitable for various network infrastructure requirements

Applications

• Ethernet Power Sourcing Equipment (PSE) managers
• PoE+ switch implementations
• Network infrastructure power distribution systems

Procurement Notes

Verify component authenticity through authorized channels as the TPS23851DCE is listed as obsolete by Texas Instruments. Confirm availability of qualified substitutes such as the TPS23861 series before procurement planning. Ensure documentation matches the specific package variant required for your design integration.

Selection Notes

Select this component for designs requiring quad-port PoE control under IEEE 802.3at specifications. Consider the 36-SSOP package constraints and thermal performance limits when evaluating board layout. Verify compatibility with external switching elements since the controller lacks internal switches.

Part Context

Part of the Texas Instruments PoE controller family focused on PSE management. Designed to integrate with external MOSFETs for power delivery. Supports advanced classification and monitoring features required for modern Ethernet powered devices.

Replacement Considerations

The TPS23861PWR is identified as a similar substitute part number. Verify pinout compatibility and feature parity before replacement due to the original component's obsolete status.