LTC4265CDE#TRPBF

Overview

The LTC4265CDE#TRPBF is a Power Sourcing Equipment (PSE) controller designed for IEEE 802.3at Type 2 PoE applications, supporting up to 25.5W power delivery. It integrates a high-side switch and provides comprehensive protection features including overcurrent, thermal, and short-circuit protection. The device operates within a supply voltage range of 37V to 57V and communicates via an I2C-compatible interface. Packaged in a 12-lead DFN (4x3mm) body, it is optimized for compact network infrastructure designs requiring efficient power management.

Feature Summary

• Integrates a high-side power switch with built-in protection mechanisms
• Supports IEEE 802.3at Type 2 PoE standards for high-power delivery
• Features I2C-compatible digital interface for configuration and monitoring

Applications

• IEEE 802.3at compliant PoE midspan injectors
• High-power network switch port interfaces
• PoE-powered access points and wireless controllers

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the component matches the 12-DFN footprint requirements for your PCB layout. Ensure compatibility with your system's I2C bus voltage levels. Check for any recent lifecycle status updates from Analog Devices regarding this specific part number before finalizing procurement plans.

Selection Notes

Select this component for designs requiring integrated PSE control and switching in a small form factor. It is suitable for applications needing precise power management and compliance with 802.3at standards. Consider the thermal performance of the DFN package under maximum load conditions. Evaluate the I2C interface requirements against your microcontroller capabilities.

Part Context

This part belongs to the LTC4265 family of PoE controllers from Analog Devices. It serves as a complete solution for implementing Type 2 PSE functionality. The device simplifies design by combining control logic and power switching in a single package. It is commonly used in modern networking equipment to support higher power demands from connected devices.

Replacement Considerations

LTC4265CDE#PBF is the tray-packaged equivalent of this reel-part. No other direct functional substitutes are confirmed in public documentation.