LT3761AEMSE#PBF

LED Driver IC Overview

The LT3761AEMSE#PBF is a DC/DC controller designed for LED lighting applications, operating as a constant-current source and constant-voltage regulator. It supports Boost, Buck, Buck-Boost, Flyback, and SEPIC topologies with a single output channel. The device accepts an input voltage range of 4.5 V to 60 V and can drive loads up to 10 A. It features a programmable internal PWM generator capable of producing dimming signals without external components. The IC operates at switching frequencies between 100 kHz and 1 MHz and withstands output voltages up to 100 V. It is housed in a 16-lead MSOP package with exposed pad and functions within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates a programmable internal PWM generator for precise LED dimming control without requiring external signal generation components.
• Supports multiple converter topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC for flexible circuit design.
• Provides high-side or low-side current sensing capabilities for accurate output current regulation.
• Includes analog CTRL input for additional dimming capability alongside digital PWM control.

LED Driver IC Applications

• High-power LED lighting systems requiring precise current regulation
• Automotive exterior and interior LED illumination circuits
• Industrial LED driver designs utilizing various DC/DC topologies

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm the LT3761A variant specifications against the official Analog Devices datasheet to ensure compatibility with required input voltage ranges and thermal performance. Cross-reference the MSOP-16EP package dimensions with PCB layout guidelines to maintain proper thermal dissipation and electrical clearance.

LED Driver IC Selection Notes

Select this component for designs requiring integrated PWM dimming generation to reduce external bill of materials. Ensure the application input voltage remains within the 4.5 V to 60 V range and that the peak switch current does not exceed the 10 A limit. Consider the thermal requirements of the MSOP-16EP package for high-current applications. Verify that the chosen topology aligns with the system's voltage conversion needs.

LED Driver IC Part Context

This part belongs to the LT3761 family of LED controllers from Analog Devices. The LT3761 series is engineered for high-performance LED driving, offering flexibility through multiple supported topologies. The LT3761A variant specifically enhances functionality with integrated PWM generation, simplifying the design process for applications requiring adjustable brightness levels while maintaining constant current regulation.

LED Driver IC Replacement Considerations

The LT3761EMSE-1#PBF is a related variant within the same family. Verify pinout compatibility and functional differences before substitution. No other direct cross-references are confirmed in public documentation.