LT3761IMSE#PBF

LED Driver IC Overview

The LT3761IMSE#PBF is a DC/DC controller designed for LED lighting applications, manufactured by Analog Devices Inc. It operates as a constant-current source and constant-voltage regulator with an input voltage range of 4.5 V to 60 V. The device supports multiple topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC. It features a programmable internal PWM dimming signal capable of up to 25:1 dimming ratios without external components. The output current capability reaches 10 A, with a switching frequency adjustable from 100 kHz to 1 MHz. Operating temperature ranges from -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates a programmable internal PWM generator for precise LED dimming control
• Supports versatile converter topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC
• Provides analog and PWM dimming capabilities via CTRL input

LED Driver IC Applications

• LED lighting drivers
• Constant-current source designs
• Constant-voltage regulator circuits

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when reviewing distributor listings. Confirm the MSOP-16 package type matches your PCB layout requirements. Ensure the operating temperature range of -40°C to +125°C aligns with your environmental specifications. Cross-reference the part number with official Analog Devices documentation to confirm pinout and electrical characteristics.

LED Driver IC Selection Notes

Select this component for designs requiring high input voltage support up to 60 V and flexible topology options. The integrated PWM generator simplifies circuit design by eliminating external dimming signal generation components. Consider the 10 A output current capability for high-power LED arrays. Verify that the required switching frequency range between 100 kHz and 1 MHz fits your inductor selection constraints.

LED Driver IC Part Context

The LT3761 series includes variants such as LT3761A and LT3761-1. The LT3761A offers enhanced performance characteristics compared to the standard LT3761. The LT3761-1 variant features specific internal programming configurations. All variants share the core functionality of DC/DC control for LED applications with integrated dimming capabilities.

LED Driver IC Replacement Considerations

LT3761AIMSE#PBF

LED Driver IC FAQ

Does the LT3761IMSE#PBF require an external component for PWM dimming?

No, it features a programmable internal PWM generator capable of producing dimming signals up to 25:1 ratio without external components.

What converter topologies are supported by this controller?

It supports Boost, Buck, Buck-Boost, Flyback, and SEPIC topologies.