LT4276AHUFD#PBF

$8.27

Description：IC POE CNTRL 1 CHANNEL 28QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:9bae8217d1b5 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：Tube
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 ~ 125°C
Mounting Type：Surface Mount
Package / Case：28-WFQFN Exposed Pad
Supplier Device Package：28-QFN (4x5)

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LT4276AHUFD#PBF

Overview

The LT4276AHUFD#PBF 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 delivers up to 90W output power. The device features a maximum supply current of 2mA and supports forward and flyback topologies with synchronous operation. It includes auxiliary power support and functions within a temperature range of -40°C to 125°C.

Feature Summary

Supports IEEE 802.3af, 802.3at, and LTPoE++ Powered Device standards
Includes isolated switching regulator controller for forward and flyback topologies
Enables synchronous operation with auxiliary power support

Applications

LTPoE++ powered devices requiring up to 90W output
IEEE 802.3at (PoE+) powered devices
IEEE 802.3af (PoE) powered devices

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure the component matches the required operating temperature range and standard compliance for your design. Cross-reference the manufacturer part number with authorized distributors to confirm availability status and authenticity before procurement.

Selection Notes

Select this controller for designs requiring high-power PoE delivery up to 90W via LTPoE++. It is suitable for applications needing both primary PoE power and auxiliary input support. Consider the 28-QFN package constraints and thermal management requirements for high-efficiency synchronous topologies in compact form factors.

Part Context

This component belongs to the LT4276 family of pin-for-pin compatible PD controllers from Analog Devices. The series integrates power switch control and DC-DC regulation capabilities. It is designed to simplify the implementation of high-power Ethernet-powered devices across multiple IEEE standards.