LTC4269IDKD-1#TRPBF

Overview

The LTC4269IDKD-1#TRPBF is a Power Over Ethernet Powered Device controller compliant with IEEE 802.3at standards, housed in a 32-pin DFN package. It integrates a synchronous rectifier controller and a high-voltage regulator to support flyback converter topologies for PoE applications up to 25.5W. The device features an internal 60V power switch and supports non-optocoupler feedback configurations.

Feature Summary

• Integrates synchronous rectifier control for efficient flyback conversion
• Supports non-optocoupler feedback topology via isolated auxiliary winding
• Includes integrated high-voltage regulator for bias supply generation

Applications

• IEEE 802.3at compliant Powered Devices
• Synchronous flyback converters for PoE endpoints
• High-power PoE applications requiring up to 25.5W output

Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm the specific suffix matches the requested datasheet revision. Request full traceability documentation including lot codes and manufacturing origin certificates to ensure compliance with quality standards.

Selection Notes

Select this component for designs requiring integrated synchronous rectification within a PoE Powered Device. Ensure the application utilizes a flyback topology compatible with the non-optocoupler feedback mechanism. Verify that the input voltage range and thermal requirements align with the 32-pin DFN package capabilities.

Part Context

This part belongs to the LTC4269 family of PoE controllers designed for advanced Powered Devices. It distinguishes itself by combining the PD controller with synchronous rectifier management, eliminating the need for external optocouplers and reducing component count in high-efficiency power supplies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.