LT8391DJUFDM#WPBF

LED Driver IC Overview

The LT8391DJUFDM#WPBF is a synchronous four-switch buck-boost LED controller from Analog Devices, designed for high-performance lighting applications. It supports an input voltage range of 4V to 60V and provides a regulated output current capability of up to 10A. The device operates at a switching frequency of 600kHz and features spread spectrum modulation to reduce electromagnetic interference. Packaged in a 28-lead QFN format, it ensures seamless transitions between operating modes with low noise characteristics suitable for automotive and industrial environments.

LED Driver IC Feature Summary

• Synchronous four-switch buck-boost topology enables operation across wide input and output voltage ranges without discontinuity.
• Integrated spread spectrum modulation reduces conducted and radiated electromagnetic interference for compliance-friendly designs.
• Seamless low-noise transition between buck, boost, and bypass modes maintains stable LED current regulation under varying line conditions.

LED Driver IC Applications

• Automotive exterior and interior LED lighting systems
• Industrial high-bay and street lighting drivers
• Battery-powered portable lighting equipment

LED Driver IC Procurement Notes

Verify the specific suffix #WPBF indicates the waffle pack packaging configuration as defined by Analog Devices standards. Confirm that the QFN package variant matches your PCB footprint requirements. Ensure compatibility with the required thermal dissipation design for the 28-lead form factor. Cross-reference the datasheet revision to confirm pinout consistency before finalizing procurement orders.

LED Driver IC Selection Notes

Select this component when designing LED drivers requiring wide input voltage flexibility and high efficiency across buck and boost regions. The integrated spread spectrum feature aids in meeting strict EMC regulations without additional filtering components. Consider the 28-QFN package for compact board layouts requiring robust thermal performance in space-constrained automotive or industrial enclosures.

LED Driver IC Part Context

This part belongs to the LT8391 family of synchronous buck-boost LED controllers. It shares core architectural similarities with variants like the LT8391HFE#PBF but differs in package type and manufacturing specifications. The family is engineered for high-power LED applications demanding precise current regulation and wide dynamic range operation.

LED Driver IC Replacement Considerations

Direct substitutes include other LT8391 family members such as LT8391HFE#PBF, though package differences must be accounted for. Verify functional equivalence regarding control logic and pinout compatibility before swapping packages. Alternative solutions may require external component adjustments due to differing thermal or electrical characteristics.