LTC4268CDKD-1#PBF

Overview

The LTC4268CDKD-1#PBF is a high-power Powered Device (PD) interface controller compliant with IEEE 802.3at standards, designed for Power over Ethernet applications. It integrates a synchronous no-optocoupler flyback controller to simplify power supply design. The device operates within a 60V input range and supports output power up to 25.5W. It features precise regulation capabilities and includes an integrated hot-swap controller for safe insertion and removal from live backplanes.

Feature Summary

• Integrates a synchronous no-optocoupler flyback controller to reduce component count and improve reliability in PoE-powered designs.
• Provides precise regulation for the PoE interface controller to ensure stable power delivery.
• Includes built-in hot-swap control functionality to protect circuitry during board insertion and removal.

Applications

• High-power Powered Devices requiring IEEE 802.3at compliance
• Power over Ethernet interface controllers
• Synchronous no-opto flyback converter implementations

Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliance when sourcing. Confirm the DFN-32 package type matches your PCB footprint requirements. Ensure the operating temperature range aligns with your system's environmental conditions. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components.

Selection Notes

Select this component for applications requiring high-power PoE PD solutions with simplified flyback topology. It is suitable where space constraints favor the integration of switching control and interface logic. Consider the DFN-32 package for surface-mount assembly needs. Evaluate thermal performance requirements given the integrated power switch capabilities.

Part Context

This part belongs to the LTC4268-1 series of Power Switch ICs specifically designed for PoE/LAN applications. It falls under the broader category of Switch ICs manufactured by Analog Devices. The series focuses on providing comprehensive power management solutions for networked devices requiring efficient power extraction and conversion.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official Analog Devices documentation for potential cross-references or newer revisions within the same product family.