LT3791MPFE#PBF

LED Driver IC Overview

The LT3791MPFE#PBF is a synchronous four-switch buck-boost controller from Analog Devices. It regulates output voltage or current with high efficiency across wide input and output ranges. The device supports input voltages from 4.7V to 60V and delivers up to 10A output current at 60V. Operating frequencies range from 200kHz to 700kHz, with a maximum switching frequency of 1.5MHz. It features a 38-pin TSSOP-EP package and operates within a temperature range of -55°C to +150°C.

LED Driver IC Feature Summary

• Synchronous four-switch topology for efficient buck-boost regulation
• Supports analog and PWM dimming for LED applications
• Integrated soft-start and programmable frequency control
• Wide input voltage range accommodating various power sources

LED Driver IC Applications

• High brightness LED drivers
• Battery-powered systems requiring step-up/step-down capability
• Industrial lighting controls
• Automotive illumination circuits

LED Driver IC Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm pinout and electrical specifications. Ensure the procurement channel provides valid traceability for the MPFE variant. Confirm RoHS compliance status directly with the manufacturer's latest release notes before finalizing component selection for production.

LED Driver IC Selection Notes

Select this controller when a single IC must handle both buck and boost operations in a synchronous configuration. It is suitable for designs requiring precise current regulation for LEDs or flexible voltage conversion. Consider the thermal performance of the TSSOP-EP package and ensure adequate PCB layout for high-current paths to maintain stability and efficiency.

LED Driver IC Part Context

This component belongs to the LT3791 family of DC-DC controllers designed for versatile power conversion. It integrates the control logic for an external four-switch bridge, distinguishing it from simpler three-switch or non-synchronous alternatives. The part is optimized for applications demanding high efficiency over wide dynamic input and output voltage ranges.

LED Driver IC Replacement Considerations

Direct substitutes include LT3791EFE#PBF, LT3791IFE#PBF, and LT3791HFE#PBF. These variants share the same functional architecture but may differ in temperature grade or specific electrical ratings. Verify package compatibility and thermal requirements when transitioning between these related part numbers.