LTC4263CDE#TRPBF

Overview

The LTC4263CDE#TRPBF is a Power Sourcing Equipment (PSE) controller integrated with a high-power single-channel switch, designed for IEEE 802.3at PoE applications. It operates in a DFN-14 surface-mount package and supports classification levels up to Class 4. The device manages power delivery by detecting powered devices, classifying their power requirements, and enabling the internal switch to supply power. It includes comprehensive protection features such as overvoltage, overcurrent, and thermal shutdown to ensure safe operation within PoE networks.

Feature Summary

• Integrates a PSE controller with an internal high-current power switch for compact design
• Supports IEEE 802.3at standards with multi-level classification capabilities
• Provides robust fault protection including overvoltage, overcurrent, and thermal limits

Applications

• IEEE 802.3at Powered Device power sourcing equipment
• High-power LAN network infrastructure
• PoE midspan injectors requiring single-port control

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature range. Confirm availability status through authorized distributors as supply may be limited. Ensure compatibility with existing PCB footprint and thermal management requirements before procurement.

Selection Notes

Select this component when a combined controller and switch solution is required for 802.3at compliance. Consider the DFN-14 package constraints for thermal dissipation. Evaluate if the integrated switch current rating meets the specific load requirements of the target application without external passives.

Part Context

This part belongs to the LTC4263 series of PoE controllers. It is distinct from the LTC4269 which targets Powered Devices (PD). The 'CDE' designation indicates commercial temperature range and DFN-14 packaging. It serves as a key component in modern Ethernet switches and injectors supporting higher power budgets.

Replacement Considerations

Check for direct pin-compatible alternatives within the LTC4263 family or other 802.3at PSE controllers from Analog Devices. Verify that any substitute maintains the same classification logic and switch current handling capabilities.