LTC4266AIUHF-4#TRPBF

Overview

The LTC4266AIUHF-4#TRPBF is a quad Power Sourcing Equipment (PSE) controller from Analog Devices, designed for high-power Ethernet applications. It supports LTPoE++, PoE+, and IEEE 802.3af/at standards, delivering up to 90W per channel. The device operates with a supply voltage range of 45V to 57V and draws a typical supply current of 2.4mA. It is housed in a 38-pin WFQFN exposed pad package and functions within an operating temperature range of -40°C to 85°C.

Feature Summary

• Supports LTPoE++ technology for delivering up to 90W of power to compatible powered devices
• Integrates four independent channels for multi-port power sourcing equipment designs
• Provides comprehensive protection mechanisms including overvoltage, overcurrent, and thermal shutdown

Applications

• High-power PoE switches and hubs
• LTPoE++ powered device interfaces
• Industrial networking infrastructure

Procurement Notes

Verify the specific suffix and tape-and-reel configuration against official Analog Devices documentation before procurement. Confirm that the component meets all required environmental and safety certifications for the target deployment region. Ensure compatibility with existing PCB footprints and design specifications.

Selection Notes

Select this component for designs requiring high-density power delivery over Ethernet cables. It is suitable for applications needing support for legacy PoE standards alongside modern high-power protocols. Consider thermal management requirements due to the high power handling capabilities of the integrated channels.

Part Context

This part belongs to the LTC4266 family of PSE controllers, which are engineered for robust Ethernet power distribution. The AIUHF-4 designation indicates a specific grade and packaging variant optimized for surface-mount assembly. It serves as a critical interface between the network switch logic and the power delivery circuitry.

Replacement Considerations

Public confirmed substitute part numbers: None identified.