LTC4268IDKD-1#TRPBF

$3.68

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

SKU:7c2b2af2eb5e 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)
Type：Controller (PD), DC/DC
Number of Channels：1
Power - Max：35 W
Internal Switch(s)：No
Auxiliary Sense：No
Standards：802.3af (PoE)
Voltage - Supply：57V (Max)
Current - Supply：3mA (Max)
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：32-WFDFN Exposed Pad
Supplier Device Package：32-DFN (7x4)

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LTC4268IDKD-1#TRPBF

Overview

The LTC4268IDKD-1#TRPBF is an integrated Powered Device (PD) controller and switching regulator designed for IEEE 802.3af and high-power PoE applications up to 35W. It operates within a temperature range of -40°C to 85°C and utilizes a 32-Lead DFN package measuring 7mm x 4mm with an exposed pad. The device supports synchronous rectification without requiring an optocoupler, integrating flyback control capabilities directly into the PD interface.

Feature Summary

Integrates Powered Device controller with synchronous no-opto flyback switching regulator
Supports IEEE 802.3af standards and high-power PoE applications up to 35W
Eliminates need for external optocoupler through integrated synchronous rectification

Applications

IEEE 802.3af Powered Device implementations
High-power PoE applications up to 35W
Network infrastructure equipment requiring isolated power conversion

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm lot traceability and RoHS compliance status prior to integration. Ensure storage conditions meet moisture sensitivity level requirements for QFN packages. Validate that the specific suffix matches design specifications for thermal and electrical performance.

Selection Notes

Select this component when designing systems requiring combined PoE detection and isolated DC-DC conversion in a compact form factor. The integrated approach reduces bill of materials by eliminating external optocouplers and associated feedback circuitry. Consider thermal dissipation requirements given the 35W power capability within the small 7mm x 4mm footprint.

Part Context

This part belongs to the LTC4268-1 series from Analog Devices, specifically engineered for Power over Ethernet solutions. It combines classification, detection, and protection functions with a complete flyback converter controller. The ID variant indicates industrial temperature rating suitable for demanding network environments.