LTC4263CS#TRPBF

Overview

The LTC4263CS#TRPBF is a single-channel Power Sourcing Equipment (PSE) controller compliant with the IEEE 802.3af standard for Power over Ethernet systems. Manufactured by Analog Devices Inc., this component integrates an internal power switch and operates in the commercial temperature range of 0°C to +70°C. It utilizes a 14-lead SOIC surface-mount package, designated as DFN-14 in some documentation contexts, facilitating compact circuit board layouts. The device functions autonomously to manage power delivery without requiring external microcontrollers.

Feature Summary

• Autonomous operation for IEEE 802.3af PoE applications
• Integrated internal power switch for simplified design
• Single-channel control architecture

Applications

• IEEE 802.3af compliant Power over Ethernet endpoints
• Network infrastructure power distribution units
• Compact LAN-powered device implementations

Procurement Notes

Verify current availability status directly with authorized distributors, as supply constraints may apply. Confirm the specific suffix designation matches the required package type and temperature grade. Ensure compatibility with existing system voltage levels and regulatory compliance requirements before finalizing procurement orders.

Selection Notes

Select this component for designs requiring a standalone PSE solution that minimizes external component count. The integrated switch capability reduces bill of materials complexity compared to discrete solutions. Verify that the single-channel requirement aligns with the target application's power port density needs.

Part Context

This part belongs to the LTC4263 series of PoE controllers from Analog Devices. It serves as a foundational component for network equipment manufacturers seeking certified power sourcing solutions. The series includes variants with different package options and integrated switch configurations to suit various form factors.

Replacement Considerations

Consult official Analog Devices documentation for qualified substitute part numbers within the same family or compatible generations. Verify pinout compatibility and electrical parameter equivalence before implementing any alternative components in existing designs.