LTC4268CDKD-1#TRPBF

Overview

The LTC4268CDKD-1#TRPBF is a high-power Powered Device (PD) controller designed for IEEE 802.3at Power over Ethernet applications. It integrates a synchronous no-optocoupler flyback controller to efficiently transfer power from the PD input to the system load. The component operates within a DFN-32 package and supports surface mount installation. It complies with the 802.3at standard, enabling robust power delivery for networked devices requiring higher wattage budgets.

Feature Summary

• Integrates a synchronous no-optocoupler flyback controller for efficient isolated power conversion
• Designed specifically for high-power Powered Device implementations under IEEE 802.3at standards
• Supports direct connection to PoE LAN inputs for simplified system architecture

Applications

• High-power IEEE 802.3at Powered Devices
• Network infrastructure equipment requiring integrated power conversion
• PoE-enabled industrial or commercial terminal units

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the part number matches the DFN-32 package variant. Cross-reference the datasheet for the latest electrical characteristics and thermal requirements before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring an integrated solution for high-power PoE applications. It combines PD classification logic with a flyback controller, reducing external component count compared to discrete solutions. Ensure the design supports the synchronous rectification topology inherent to the internal controller for optimal efficiency at higher power levels.

Part Context

This part belongs to the LTC4268-1 series of power switch ICs for PoE/LAN applications. It serves as a Powered Device controller, distinct from Power Sourcing Equipment controllers like the LTC4263. The series focuses on providing complete power management solutions for endpoints that receive power over Ethernet cables.

Replacement Considerations

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