LT3791HFE#PBF

LED Driver IC Overview

The LT3791HFE#PBF is a synchronous buck-boost LED driver controller from Analog Devices, housed in a 38-pin TSSOP-EP package. It supports an input voltage range of 4.7 V to 60 V and delivers up to 10 A output current with a single output. The device operates at switching frequencies between 200 kHz and 700 kHz, drawing only 3 mA of quiescent current. It functions within an extended temperature range of -40°C to +150°C and integrates analog and PWM dimming capabilities for precise light control.

LED Driver IC Feature Summary

• Supports non-isolated buck-boost topology for wide input voltage ranges
• Integrates analog and pulse-width modulation dimming interfaces
• Features low quiescent current consumption for energy efficiency
• Includes thermal regulation and cycle-by-cycle current limiting

LED Driver IC Applications

• High-power LED lighting systems
• Industrial illumination drivers
• Automotive exterior lighting applications
• Portable battery-powered lighting equipment

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when reviewing distributor listings. Confirm the component meets RoHS compliance standards required for your assembly process. Ensure the 38-TSSOP-EP footprint matches your PCB layout constraints. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit risks during sourcing.

LED Driver IC Selection Notes

Select this controller for designs requiring high input voltages up to 60 V and significant output currents. It is suitable for applications needing both analog and digital dimming flexibility. Consider the thermal performance of the exposed pad package for heat dissipation requirements. Evaluate the external MOSFET selection to ensure compatibility with the 200 kHz to 700 kHz operating frequency range.

LED Driver IC Part Context

This component belongs to the LT3791 family of synchronous buck-boost controllers designed primarily for LED driving. It shares architectural similarities with other members like the LT3791EFE and LT3791IFE but is distinguished by its specific electrical ratings and package configuration. The series is engineered for robust performance in demanding lighting environments.

LED Driver IC Replacement Considerations

Direct substitutes include LT3791EFE#PBF and LT3791IFE#PBF. Verify pinout compatibility and electrical specifications before substitution. The DC1666A evaluation board is available for testing similar circuit configurations.