LT3755IUD-2#PBF

LED Driver IC Overview

The LT3755IUD-2#PBF 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 an output current of 10 A and features adjustable output voltage control. It supports multiple topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC. The component functions within a frequency range of 100 kHz to 1 MHz and is housed in a QFN-16 package. It includes PWM dimming capabilities and open LED protection.

LED Driver IC Feature Summary

• Supports multiple converter topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC for flexible LED driver designs.
• Features internal regulation to drive external low-side N-channel power MOSFETs from a 7.15 V supply.
• Includes dedicated protection mechanisms such as open LED detection to ensure system reliability.

LED Driver IC Applications

• High-current LED lighting systems requiring constant current sources
• Industrial illumination fixtures utilizing PWM dimming
• Automotive exterior lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix designation when ordering, as variants like LT3755IUD-1#PBF exist with identical electrical specifications but different part numbering. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the QFN-16 package footprint matches the PCB layout requirements. Cross-reference the datasheet revision date to confirm feature availability.

LED Driver IC Selection Notes

Select this component for designs requiring wide input voltage ranges and high output currents up to 10 A. The fixed frequency current mode architecture ensures stable operation across varying supply and output conditions. Consider the thermal performance of the QFN-16 package for high-power applications. Verify compatibility with external MOSFET gate drive requirements provided by the internal 7.15 V regulator.

LED Driver IC Part Context

The LT3755 series comprises DC/DC controllers engineered specifically for driving high-current LEDs. The LT3755-2 variant distinguishes itself through its specific pinout and configuration options compared to other family members. These controllers utilize a current-mode architecture to maintain precise regulation. The series is categorized under LED Lighting Drivers within Analog Devices' portfolio.

LED Driver IC Replacement Considerations

LT3755IUD-1#PBF serves as a functional substitute within the same series, sharing identical electrical parameters and topology support. Both parts utilize the QFN-16 package and operate within the same voltage and current ranges. Verify pin-to-pin compatibility during design replacement to ensure seamless integration without schematic modifications.