LT3755IMSE-2#PBF

LED Driver IC Overview

The LT3755IMSE-2#PBF is a DC/DC controller designed as a constant-current source for high-current LEDs. It supports Boost, Buck, Buck-Boost, Flyback, and SEPIC topologies with an input voltage range of 4.5V to 40V and up to 10A output current. The device features adjustable switching frequencies from 100kHz to 1MHz and operates within a temperature range of -40°C to +125°C. It includes PWM dimming capabilities and open LED protection in a 16-lead MSOP package.

LED Driver IC Feature Summary

• Supports multiple converter topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC for flexible LED driver designs
• Features fixed frequency current mode architecture for stable operation across wide supply and output voltage ranges
• Includes internal regulated 7.15V supply to drive external low-side N-channel power MOSFETs
• Provides analog and PWM dimming control with integrated open LED protection

LED Driver IC Applications

• High power LED lighting systems requiring constant current regulation
• Battery charger applications utilizing DC/DC conversion
• LED drivers supporting 20kHz PWM dimming for display or general illumination
• Automotive or industrial LED modules operating within specified voltage and temperature limits

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the MSOP-16 package variant matches your PCB footprint requirements. Check official Analog Devices documentation for the latest manufacturing status and availability constraints, as distribution channels may report limited stock or regional sales restrictions. Ensure compatibility with your system's thermal management needs given the 125°C junction temperature rating.

LED Driver IC Selection Notes

Select this component when designing LED drivers that require support for diverse topologies such as Buck-Boost or Flyback. The adjustable frequency range allows optimization for EMI and efficiency. Consider the 10A output capability for high-power applications. Verify that the external MOSFET selection aligns with the internal 7.15V gate drive supply. Ensure the design accommodates the required dimming interface, whether analog or PWM, for the target application.

LED Driver IC Part Context

The LT3755 series serves as a versatile family of LED controllers from Analog Devices. The IMSE-2 variant specifically denotes the MSOP-16 package option. This controller integrates essential protection features and flexible timing controls to simplify high-current LED driver development across various industrial and commercial lighting sectors.

LED Driver IC Replacement Considerations

LT3755IMSE-1#PBF is a confirmed substitute part number within the same product family, offering identical electrical specifications but potentially differing in package marking or minor revision details. Verify pinout compatibility before substitution.