LTC4290AIUJ#TRPBF

Overview

The LTC4290AIUJ#TRPBF is an eight-channel Power Sourcing Equipment (PSE) controller compliant with IEEE 802.3at (PoE+) and 802.3af standards, supporting LTPoE++ for extended power applications. It operates within a supply voltage range of 36V to 57V and delivers up to 15W per channel. The device integrates Class 4 detection logic, programmable current limits, and thermal regulation. Packaged in a 40-lead QFN (6x6mm) suitable for surface mount assembly, it functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates eight independent PoE/PoE+ channels with Class 4 detection capabilities
• Supports LTPoE++ protocol for high-power data center applications
• Includes integrated MOSFET drivers and comprehensive protection circuitry

Applications

• High-density enterprise network switches
• Industrial PoE midspan injectors
• Data center infrastructure equipment

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging configuration. Confirm that the AI grade designation meets required environmental specifications. Ensure compatibility with existing PCB footprints and thermal management designs before procurement.

Selection Notes

Select this component when deploying eight-channel PoE solutions requiring LTPoE++ support. Compare against single-channel controllers if lower port density suffices. Evaluate thermal dissipation requirements given the high integration level and eight-channel output capability.

Part Context

This part belongs to the LTC4290 family of multi-port PSE controllers designed for robust power delivery over Ethernet. It complements Analog Devices' portfolio of PoE management ICs by offering high channel count integration. The device addresses market demands for compact, efficient power distribution in modern networking hardware.

Replacement Considerations

LTC4290CIUJ#TRPBF: Lower temperature grade variant (-40°C to +70°C). Verify thermal requirements match application constraints before substitution.