LT3761HMSE#TRPBF

LED Driver IC Overview

The LT3761HMSE#TRPBF is a DC/DC controller designed for high-performance LED driving applications. It operates as a constant-current source and constant-voltage regulator, supporting multiple topologies including flyback, SEPIC, step-down (buck), and step-up (boost). The device accepts input voltages ranging from 4.5V to 60V and features an internal PWM generator capable of producing dimming signals up to 25:1 without external components. It supports analog and PWM dimming with ratios up to 3000:1 when driven by an external signal. Operating frequencies range from 100kHz to 1MHz, with a supply current of 2200uA.

LED Driver IC Feature Summary

• Integrates a programmable internal PWM generator for precise dimming control without external signal generation components.
• Supports versatile power stage configurations including flyback, SEPIC, buck, and boost topologies for flexible LED driver designs.
• Enables high-contrast dimming through both internal PWM generation and external analog or PWM input capabilities.

LED Driver IC Applications

• High-power LED lighting systems requiring precise current regulation
• Automotive exterior and interior LED illumination
• Portable battery-powered LED devices
• General-purpose constant-current LED drivers

LED Driver IC Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging configuration when sourcing. Confirm the HMSE variant meets the required thermal performance specifications for the intended operating environment. Ensure compatibility with the selected external power MOSFETs and inductors for the chosen topology. Check for RoHS compliance status if environmental regulations apply to the final assembly.

LED Driver IC Selection Notes

Choose this component when a single controller must support multiple LED drive topologies within a design. It is suitable for applications requiring integrated dimming functionality to reduce bill-of-materials count. Consider the 60V input limit and 1MHz maximum switching frequency when designing magnetic components. Evaluate the exposed pad package requirements for adequate thermal dissipation in high-current scenarios.

LED Driver IC Part Context

This part belongs to the LT3761 family of LED controllers manufactured by Analog Devices Inc. The LMSE package denotes a 16-pin MSOP with an exposed pad for thermal management. The #TRPBF suffix specifies the reel packaging format and lead-free finish. It replaces earlier Linear Technology versions with updated manufacturing standards while maintaining functional equivalence.

LED Driver IC Replacement Considerations

The LT3761IMSE#TRPBF serves as a verified industrial-grade alternative within the same family. Both parts share identical pinouts and functional specifications. Verify temperature range requirements before substitution, as the H-grade typically offers extended operational limits compared to standard variants.