LT3755IUD-1#TRPBF

LED Driver IC Overview

The LT3755IUD-1#TRPBF is a DC/DC controller designed as a constant-current source for driving high-current LEDs. It supports Boost, Buck, Buck-Boost, Flyback, and SEPIC topologies with an input voltage range of 4.5 V to 40 V and a maximum output voltage of 75 V. The device delivers up to 10 A output current through an internal 7.15 V supply driving an external N-channel MOSFET. Operating frequencies range from 100 kHz to 1 MHz within a -40°C to +125°C temperature range in a 16-pin QFN package.

LED Driver IC Feature Summary

• Supports multiple converter topologies including boost, buck, buck-boost, flyback, and SEPIC configurations
• Fixed frequency current mode architecture ensures stable operation across wide input and output voltage ranges
• Internal regulated 7.15 V supply drives low-side external N-channel power MOSFETs
• Enables high-resolution PWM dimming capabilities

LED Driver IC Applications

• Automotive LED headlamp drivers
• High-power LED lighting systems
• Industrial LED illumination

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the -1 variant includes required automotive-grade features such as open LED protection. Ensure compatibility with the intended PCB footprint for the 16-pin QFN EP package before procurement.

LED Driver IC Selection Notes

Select this component for applications requiring high current drive capability up to 10 A. Consider the wide input voltage range suitable for battery-powered or vehicle electrical systems. Evaluate thermal management requirements due to the high current handling capacity and ensure the chosen topology matches the system's voltage conversion needs.

LED Driver IC Part Context

This part belongs to the LT3755 series of LED driver controllers manufactured by Analog Devices. It is specifically engineered for demanding lighting applications where precise current regulation and flexible topology support are critical. The device integrates essential control functions to simplify the design of complex LED driver circuits.

LED Driver IC Replacement Considerations

Check for LT3755IUD#TRPBF if the -1 automotive-specific features are not required. Verify pinout and functional compatibility with alternative high-current LED controllers from other manufacturers if supply constraints exist.