LT4276AIUFD#TRPBF

$7.22

Description：IC POE CNTRL 1 CHANNEL 28QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:a1a987344b1d Category: Power Over Ethernet (PoE) Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC POE CNTRL 1 CHANNEL 28QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Controller (PD), DC/DC
Number of Channels：1
Power - Max：90 W
Internal Switch(s)：No
Auxiliary Sense：Yes
Standards：802.3at (PoE+), 802.3af (PoE), LTPoE++
Voltage - Supply：60V (Max)
Current - Supply：2mA (Max)
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：28-WFQFN Exposed Pad
Supplier Device Package：28-QFN (4x5)

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LT4276AIUFD#TRPBF

Overview

The LT4276AIUFD#TRPBF is a Powered Device (PD) controller supporting IEEE 802.3af, 802.3at, and LTPoE++ standards. It operates with an input voltage range of 37V to 57V and a maximum supply voltage of 60V. The device delivers up to 90W of output power in forward mode or 25.5W in flyback mode. It features a 28-WFQFN package with exposed pad, operating temperatures from -40°C to 125°C, and draws a maximum supply current of 2mA.

Feature Summary

Supports IEEE 802.3af, 802.3at, and LTPoE++ Powered Device protocols
Includes isolated switching regulator controller for forward and flyback topologies
Enables auxiliary power support for enhanced operational flexibility
Provides pin-for-pin compatibility within the LT4276 family

Applications

LTPoE++ powered devices requiring high power delivery
IEEE 802.3at PoE+ powered equipment
Isolated DC-DC converters using flyback topology
Isolated DC-DC converters using forward topology

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing. Confirm the 'A' grade designation meets required temperature and performance specifications. Ensure the 28-QFN footprint matches the PCB layout. Check for RoHS compliance documentation. Validate availability status as distribution channels may vary.

Selection Notes

Select this component for designs requiring LTPoE++ compatibility alongside standard PoE standards. Choose the AIUFD variant for industrial temperature ranges up to 125°C. Consider the 90W forward mode capability for high-power applications. Verify that the external transformer design supports the chosen topology. Ensure the system architecture utilizes the auxiliary power feature if needed.

Part Context

This part belongs to the LT4276 series of Ethernet Power over Ethernet controllers manufactured by Analog Devices Inc. The series provides integrated solutions for powering networked devices via data lines. The LT4276 family is designed to simplify the implementation of compliant powered devices across various power classes.