LT4275AIDD#PBF

Overview

The LT4275AIDD#PBF is a Powered Device (PD) controller supporting IEEE 802.3af, 802.3at, and LTPoE++ standards. It operates within a supply voltage range of 23V to 60V with a maximum supply current of 2mA. The device supports up to 90W output power and functions in temperatures from -40°C to +85°C. It utilizes a 10-WFDFN package with exposed pad.

Feature Summary

• Supports proprietary LTPoE++ classification for high-power delivery alongside standard PoE and PoE+ compliance
• Integrates charge pump to drive external N-channel MOSFETs, eliminating the need for P-channel alternatives
• Includes onboard signature resistor and programmable auxiliary power support for flexible system design

Applications

• High-power wireless data systems
• Outdoor security camera equipment
• Commercial and public information displays

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm RoHS compliance status via official material declarations. Ensure storage conditions meet manufacturer specifications to maintain reliability. Check for recent Product Change Notices regarding manufacturing updates.

Selection Notes

Select this model for applications requiring LTPoE++ compatibility up to 90W. It is suitable for designs needing integrated PD control with external MOSFET switching. Consider thermal management requirements due to high power handling capabilities. Verify pinout compatibility if replacing older LT4275 variants.

Part Context

Part of the LT4275 family of pin-compatible PD controllers. Includes variants like LT4275B and LT4275C for lower power IEEE standards. Designed for integration with ideal diode bridges like LT4321. Supports both tube and tape-and-reel packaging options.

Replacement Considerations

LT4275AIDD#TRPBF offers identical functionality in tape-and-reel packaging.