LTC4263IDE-1#TRPBF

Overview

The LTC4263IDE-1#TRPBF is a single-channel Power Sourcing Equipment (PSE) controller compliant with the IEEE 802.3af standard, designed for use in Ethernet Powered (PoE) systems. It integrates a power MOSFET switch and supports operation within a supply voltage range of 33 V to 66 V. The device features an internal current limit of 425 mA and a maximum on-resistance of 3 Ohms. It operates reliably across a temperature range from 0°C to +70°C and utilizes a DFN-14 surface-mount package.

Feature Summary

• Integrates a complete PSE control solution with an internal power MOSFET switch
• Includes built-in surge, current limiting, and short-circuit protection circuits
• Features PD detection and classification logic compliant with IEEE 802.3af standards
• Supports configurable port current limits that adjust automatically based on detected PD class

Applications

• Single-port or multi-port power injectors
• Midspan PoE power delivery devices
• Endpoint PSE implementations
• Low-port-count PSE environmental applications

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or direct manufacturer channels. Confirm the specific suffix matches the required commercial grade and tape-and-reel packaging configuration. Ensure compliance with RoHS directives and relevant trade regulations prior to integration into final designs.

Selection Notes

Select this component for designs requiring autonomous IEEE 802.3af PSE functionality without external microcontroller intervention. The integrated switch simplifies bill-of-materials by reducing external component count. Verify that the 33V to 66V input range aligns with the system's 48V nominal power source requirements.

Part Context

This part belongs to the LTC4263 series of PoE controllers manufactured by Analog Devices. It represents the commercial temperature variant housed in a DFN-14 package and supplied in a tape-and-reel format. The series provides a standardized solution for implementing compliant power sourcing equipment in network infrastructure.

Replacement Considerations

LTC4263CDE-1#TRPBF: Industrial temperature grade equivalent in the same package.