LT8393JUFDM#PBF

LED Driver IC Overview

The LT8393JUFDM#PBF is a synchronous four-switch buck-boost LED driver controller from Analog Devices. It supports an input voltage range of 4 V to 60 V and delivers an output voltage capability up to 100 V. The device operates with a switching frequency between 350 kHz and 2 MHz. It features analog and PWM dimming capabilities for precise light control. The component is housed in a 28-pin QFN package with wettable flanks, designed for surface mount applications.

LED Driver IC Feature Summary

• Synchronous four-switch buck-boost topology enabling operation across wide input and output voltage ranges
• Integrated low EMI spread spectrum modulation to minimize electromagnetic interference
• Supports both analog and pulse-width modulation (PWM) dimming methods for flexible lighting control

LED Driver IC Applications

• High-power LED lighting systems requiring wide input voltage tolerance
• Automotive exterior lighting applications such as headlights and taillights
• Industrial lighting fixtures utilizing constant current regulation

LED Driver IC Procurement Notes

Verify the specific suffix JUFDM against official Analog Devices documentation to confirm pinout and thermal pad configuration. Ensure compatibility with the intended PCB footprint, particularly regarding the exposed pad design. Confirm RoHS compliance status through the manufacturer's latest certification documents before integration into production assemblies.

LED Driver IC Selection Notes

Select this controller when designing circuits that require handling input voltages significantly lower or higher than the LED string voltage. The 100 V output capability allows for driving long series LED strings from standard automotive or industrial power rails. Consider the thermal performance of the QFN package relative to the expected continuous current load and ambient operating conditions.

LED Driver IC Part Context

This component belongs to the LT8393 family of synchronous buck-boost controllers designed for high-efficiency power conversion. It integrates the gate drivers and control logic necessary to manage external MOSFETs in a four-switch configuration. The device is engineered to maintain stable regulation under varying line and load conditions typical in demanding lighting environments.

LED Driver IC Replacement Considerations

LT8393HUFDM#TRPBF: Different temperature grade and tape-and-reel packaging variant within the same functional family.