LT3755EUD-1#TRPBF

LED Driver IC Overview

The LT3755EUD-1#TRPBF is a DC/DC controller designed as a constant-current source for driving high-current LEDs. It supports multiple topologies including Buck, Boost, Buck-Boost, Flyback, and SEPIC. The device operates with an input voltage range of 4.5 V to 40 V and can drive up to 10 A output current. It features an internal regulated 7.15 V supply for the external low-side N-channel power MOSFET. The fixed frequency, current-mode architecture ensures stable operation over wide input and output voltage ranges. It is housed in a 16-pin QFN package.

LED Driver IC Feature Summary

• Supports multiple LED driver topologies including Buck, Boost, Buck-Boost, Flyback, and SEPIC configurations
• Features PWM dimming capability for precise light control
• Includes open LED protection to safeguard against circuit faults
• Utilizes a fixed frequency, current-mode architecture for stable operation

LED Driver IC Applications

• High current LED lighting systems
• Automotive LED applications
• Industrial LED drivers
• General purpose LED illumination

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the EUD variant corresponds to the extended temperature range (-40°C to +125°C) required for your application. Ensure compatibility with the 16-QFN (3x3 mm) footprint during PCB layout. Cross-reference the datasheet for exact electrical characteristics relative to your specific operating conditions.

LED Driver IC Selection Notes

Select this component when a versatile LED controller supporting multiple converter topologies is required. It is suitable for designs needing high output current capabilities up to 10 A. Consider the 16-QFN package size for space-constrained layouts. Verify that the external MOSFET selection aligns with the internal 7.15 V gate drive supply specifications.

LED Driver IC Part Context

This part belongs to the LT3755 family of LED controllers from Analog Devices. The family includes variants such as LT3755IUD and LT3755IMSE-1, which share similar core functionalities but differ in package types and temperature grades. The EUD variant specifically denotes the QFN package and extended industrial temperature range.

LED Driver IC Replacement Considerations

Direct substitutes within the same family include LT3755EUD#TRPBF, though the -1 suffix may indicate specific pinout or feature variations. Other packages like MSOP-16 (LT3755IMSE-1#TRMPBF) offer functional equivalence but require different footprints. Verify topology support and thermal performance before substitution.