LT3755IUD#TRPBF

LED Driver IC Overview

The LT3755IUD#TRPBF is a DC/DC controller designed for high-current LED driving applications. It operates with an input voltage range of 4.5 V to 40 V and supports output voltages up to 75 V. The device delivers a typical maximum output current of 10 A. It features a fixed frequency, current-mode architecture supporting Boost, Buck, Buck-Boost, Flyback, and SEPIC topologies. Operating frequencies range from 100 kHz to 1 MHz. The component functions within a temperature range of -40 °C to +125 °C and is housed in a 16-pin QFN package.

LED Driver IC Feature Summary

• Supports multiple converter topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC configurations.
• Provides true color PWM dimming capability with open LED detection protection.
• Drives external low-side N-channel power MOSFETs using an internal regulated supply.
• Allows frequency setting via external resistor or synchronization to an external clock.

LED Driver IC Applications

• LED lighting drivers
• Display backlights
• Indicator circuits

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the IUD variant meets automotive-grade temperature requirements if applicable to the design. Ensure compatibility with the required switching frequency and topology before finalizing procurement specifications.

LED Driver IC Selection Notes

Select this controller for designs requiring flexible topology support and high current handling. Consider the 10 A output capability and wide input voltage range for robust LED string driving. Evaluate thermal management needs due to the QFN package form factor and ensure the application benefits from the integrated open LED protection feature.

LED Driver IC Part Context

This component belongs to the LT3755 family of DC/DC controllers manufactured by Analog Devices Inc. The series is engineered specifically for constant-current sources driving high-current LEDs. The IUD designation typically denotes automotive-grade qualification and specific packaging options within the product line.

LED Driver IC Replacement Considerations

LT3755IUD-1#TRPBF and LT3755IUD-2#TRPBF are related variants within the same family. Verify pinout and functional differences between these suffixes before substitution to ensure circuit compatibility.