LT3755IMSE-2#TRPBF

LED Driver IC Overview

The LT3755IMSE-2#TRPBF is a DC/DC controller designed for driving high-current LEDs as a constant current source. It supports Buck, Boost, Flyback, and SEPIC topologies with an input voltage range of 6V to 40V and output voltages up to 75V. The device features a fixed frequency, current mode architecture for stable operation across wide supply and output voltage ranges. It includes internal regulation at 7.15V to drive external low-side N-channel power MOSFETs. The component offers analog and PWM dimming capabilities and operates within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Supports multiple LED driver topologies including Buck, Boost, Flyback, and SEPIC
• Provides stable constant current control via fixed frequency current mode architecture
• Enables precise brightness adjustment through combined analog and PWM dimming functions

LED Driver IC Applications

• Automotive headlight systems requiring high current LED driving
• General automotive lighting applications utilizing buck-boost configurations
• Industrial LED illumination systems needing wide input voltage tolerance

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the IMSE-2 designation aligns with the required industrial temperature grade and MSOP-16 package variant. Ensure compatibility with external N-channel MOSFET selection based on the internal 7.15V gate drive specification. Check for any recent product change notifications regarding manufacturing origin or material composition updates from Analog Devices.

LED Driver IC Selection Notes

Select this controller when designing circuits that require flexible topology options such as buck-boost for varying input conditions. Consider the maximum output voltage limit of 75V against the total forward voltage of the LED string. Evaluate the need for external power MOSFETs since the device does not integrate internal switching transistors. Assess thermal management requirements for the MSOP-16 package in high-current applications.

LED Driver IC Part Context

This component belongs to the LT3755 family of LED drivers manufactured by Analog Devices Inc. (formerly Linear Technology). The series is characterized by its versatility in handling various LED loads and input sources. The IMSE-2 variant specifically denotes the industrial temperature range and surface mount packaging configuration suitable for automated assembly processes.

LED Driver IC Replacement Considerations

Direct substitutes include other variants within the LT3755 family such as LT3755IMSE-2#PBF for tube packaging or LT3755IUD for QFN packages. Cross-reference pinouts and electrical specifications carefully before substitution. Verify that alternative parts support the same input voltage range and dimming interfaces.