LT3791EFE#TRPBF

LED Driver IC Overview

The LT3791EFE#TRPBF is a synchronous 4-switch buck-boost LED driver controller from Analog Devices Inc. It regulates LED current for strings up to 52V with input voltages above, below, or equal to the output voltage. The device supports an input voltage range of 4.7V to 60V and offers a switchable frequency between 200kHz and 700kHz. It features analog and PWM dimming capabilities and operates within a junction temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Synchronous four-switch topology enables regulation across wide input-to-output voltage differentials
• Supports both analog and pulse-width modulation (PWM) dimming methods
• Integrated high-side and low-side gate drivers eliminate external MOSFET selection

LED Driver IC Applications

• High-efficiency LED lighting systems
• Automotive exterior lighting applications
• Industrial illumination fixtures

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the component matches the standard LT3791 specification rather than the LT3791-1 variant, which may have distinct electrical characteristics. Ensure the 38-TSSOP-EP package type aligns with your PCB footprint requirements before finalizing procurement.

LED Driver IC Selection Notes

Select this controller for designs requiring a single-stage solution that handles varying input sources without polarity constraints. The integrated synchronous rectification improves efficiency compared to asynchronous alternatives. Consider the thermal performance of the exposed pad package for high-current applications exceeding typical reference design limits.

LED Driver IC Part Context

This component belongs to the LT3791 family of power management ICs designed for versatile DC-DC conversion. It serves as a core controller for building custom LED drivers and general-purpose buck-boost converters. The device integrates essential control logic while relying on external passive components for energy storage and filtering.

LED Driver IC Replacement Considerations

The LT3791EFE-1#TRPBF is a related variant within the same product family. Verify if the -1 suffix denotes specific parameter differences required for your application before substituting.