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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)
- Number of Channels：1
- Power - Max：71 W
- Internal Switch(s)：No
- Auxiliary Sense：Yes
- Standards：802.3at (PoE+), 802.3af (PoE)
- 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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Overview
The LT4295HUFD#TRPBF is a Powered Device (PD) interface controller compliant with IEEE 802.3af, 802.3at, and 802.3bt standards. It integrates forward and flyback controllers for high-power applications up to 71W. The device supports five-class event detection and features a T2P output for status indication. It operates within a junction temperature range of -40°C to 125°C and utilizes a 28-lead QFN package.
Feature Summary
- Integrates forward and flyback controllers for IEEE 802.3bt PD applications
- Supports Class 5 power classification events
- Enables optocoupler-less flyback operation via auxiliary voltage sensing
- Provides robust surge protection with 100V absolute maximum rating
Applications
- High-power wireless data systems
- Outdoor security camera equipment
- Commercial and public information displays
- High-temperature industrial applications
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the 'H' grade designation matches required thermal performance specifications. Ensure compatibility with existing PCB footprints for the 28-lead QFN package. Validate that the component meets all relevant RoHS compliance requirements for the target market.
Selection Notes
Select this component for designs requiring integrated PoE PD control with high power delivery capabilities. It is suitable for systems needing support for both forward and flyback topologies without external optocouplers. Consider the wide operating temperature range for harsh environment deployments. Ensure the design accommodates the external MOSFET requirements for optimal efficiency.
Part Context
This part belongs to the LT4295 series of Power over Ethernet interfaces from Analog Devices. It serves as a comprehensive solution for powered devices in modern networking infrastructure. The series supports migration from legacy PoE standards to higher power classifications. It is designed to work alongside PSE controllers for complete system implementation.
Replacement Considerations
The LT4295IUF#PBF is a pin-compatible alternative within the same family. Verify if the specific thermal grade or packaging format differences meet the design requirements. Cross-reference datasheets to ensure functional equivalence for the intended application.
