LTC4278CDKD#TRPBF

$6.80

Description：IC POE CNTRL 1 CHANNEL 32DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:df5ea492574a 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 32DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Controller (PD), DC/DC
Number of Channels：1
Power - Max：25.5 W
Internal Switch(s)：Yes
Auxiliary Sense：Yes
Standards：802.3at (PoE+), 802.3af (PoE)
Voltage - Supply：37.2V ~ 60V
Current - Supply：1.35mA (Max)
Operating Temperature：0°C ~ 70°C
Mounting Type：Surface Mount
Package / Case：32-WFDFN Exposed Pad
Supplier Device Package：32-DFN (7x4)

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LTC4278CDKD#TRPBF

Overview

The LTC4278CDKD#TRPBF is a Powered Device (PD) controller compliant with IEEE 802.3at standards, designed for Power over Ethernet applications. It integrates a synchronous flyback controller and power switch within a DFN-32 package. The device supports no-opto flyback control, enabling high-efficiency isolated power conversion directly from the PoE input. It features integrated synchronization capabilities to minimize system noise in multi-device environments.

Feature Summary

Integrates synchronous flyback controller with power switch for compact design
Supports no-optocoupler flyback topology to reduce component count
Includes synchronization functionality for noise reduction in dense arrays

Applications

IEEE 802.3at Powered Devices requiring isolated power supplies
PoE endpoints utilizing synchronous flyback architectures
Network infrastructure equipment with strict EMI constraints

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the DFN-32 package variant matches your PCB footprint requirements. Ensure compatibility with IEEE 802.3at PD classification levels before integration. Cross-reference the manufacturer's latest datasheet for any pinout or electrical specification updates.

Selection Notes

Select this component for designs requiring an integrated solution for PoE-powered isolated outputs. It is suitable where board space is limited due to the combined controller and switch architecture. Consider the synchronization feature if operating alongside other switching converters. Verify thermal performance within the DFN-32 package for your specific power density needs.

Part Context

This part belongs to the Analog Devices LTC4278 series of PoE controllers. It is distinct from PSE controllers like the LTC4263 and high-power variants like the LTC4269. The series focuses on efficient, compact powered device implementations using synchronous rectification and integrated control loops.