LTC4266IUHF#TRPBF

Overview

The LTC4266IUHF#TRPBF is a quad Power Sourcing Equipment (PSE) controller from Analog Devices, designed for high-density PoE applications. It integrates four independent channels within a compact LQFP-48 package. The device supports IEEE 802.3at Type 2 and 802.3af standards, delivering up to 25.5W per port. It features an integrated I2C interface for configuration and monitoring, alongside built-in protection mechanisms such as over-voltage, over-current, and thermal shutdown to ensure reliable operation in network infrastructure.

Feature Summary

• Integrates four independent PSE channels with integrated power switches
• Supports IEEE 802.3at Type 2 and 802.3af classification protocols
• Includes an I2C-compatible serial interface for system control and status reporting
• Provides comprehensive protection against over-voltage, over-current, and thermal events

Applications

• High-port-count PoE switches and hubs
• Wireless access point power distribution systems
• Network surveillance camera power injection modules
• Industrial IoT gateway power supplies

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the IUHF designation corresponds to the industrial temperature range (-40°C to +85°C). Ensure compatibility with existing PCB footprints for the LQFP-48 package during procurement planning.

Selection Notes

Select this component for designs requiring multiple PoE ports in a single IC solution. It is suitable for applications needing precise power management and compliance with IEEE standards. Consider the thermal performance of the LQFP-48 package relative to the expected power dissipation per channel in the final enclosure design.

Part Context

This part belongs to the LTC4266 family of quad PSE controllers. It serves as a central component for managing power delivery in Ethernet networks. The device simplifies design by integrating control logic and power switching, reducing the bill of materials compared to discrete solutions.

Replacement Considerations

Check for direct pin-to-pin replacements within the same product family. Verify that any substitute maintains support for the required IEEE classification levels and I2C communication protocols.