LTC4269CDKD-1#PBF

Overview

The LTC4269CDKD-1#PBF is a Powered Device (PD) controller compliant with IEEE 802.3at standards, designed for high-power Power over Ethernet applications. It operates within a supply voltage range of up to 60 V and supports an output power capability of 25.5 W. The device features a current limit of 100 mA and consumes 6.4 mA during operation. It is housed in a 32-pin DFN package suitable for surface mount installation. The component functions across a temperature range from 0°C to +70°C.

Feature Summary

• Supports no-optocoupler flyback converter topologies for isolated power generation
• Integrates classification and compliance logic for IEEE 802.3at powered devices
• Provides internal switching control for synchronous rectification

Applications

• High-power PoE powered devices requiring isolated DC-DC conversion
• Synchronous flyback converter designs for network infrastructure endpoints
• Industrial or commercial equipment utilizing 802.3at power sourcing equipment

Procurement Notes

Verify availability status as the component may be subject to limited supply conditions. Confirm that the specific suffix #PBF indicates lead-free packaging compliant with RoHS directives. Ensure the operating temperature range meets the environmental requirements of the target application before finalizing procurement decisions.

Selection Notes

Select this component when designing IEEE 802.3at compliant powered devices requiring up to 25.5 W output power. The integrated flyback controller eliminates the need for external optocouplers, simplifying design complexity. Consider the 32-pin DFN package constraints for thermal management and PCB layout requirements in space-constrained applications.

Part Context

This part belongs to the LTC4269-1 series of PoE PD controllers manufactured by Analog Devices Inc. It is specifically engineered to handle high-power Ethernet applications while maintaining strict compliance with industry standards. The series integrates power switch and controller functions to streamline the design of efficient power delivery systems.

Replacement Considerations

LTC4269IDKD-1#PBF offers an extended industrial temperature range (-40°C to +85°C) compared to the commercial grade of the requested part.