LT8393JUFDM#TRPBF

LED Driver IC Overview

The LT8393JUFDM#TRPBF is a synchronous four-switch buck-boost LED driver controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4 V to 60 V and supports output voltages up to 100 V. The device regulates LED current regardless of whether the input voltage is above, below, or equal to the output voltage. It features a switchable switching frequency ranging from 350 kHz to 2 MHz and includes analog and PWM dimming capabilities. The controller is housed in a 28-lead QFN package.

LED Driver IC Feature Summary

• Synchronous four-switch topology enables efficient buck, boost, and buck-boost operation for wide input-output voltage differentials.
• Integrated regulation maintains constant LED current when input voltage exceeds, falls below, or matches the output voltage.
• Supports both analog and pulse-width modulation (PWM) dimming methods for precise light control.

LED Driver IC Applications

• High-power LED lighting systems requiring wide input voltage ranges
• Automotive exterior and interior LED illumination
• Industrial LED drivers with variable supply voltages

LED Driver IC Procurement Notes

Verify the exact part number suffix TRPBF indicates tape-and-reel packaging when placing orders. Confirm that the JUFDM designation corresponds to the specific temperature grade and package variant required for your application. Cross-reference the manufacturer's official datasheet to ensure compatibility with your PCB footprint and thermal requirements before finalizing procurement.

LED Driver IC Selection Notes

Select this component when designing LED drivers that must handle input voltages significantly higher or lower than the LED string voltage. The adjustable switching frequency allows optimization for efficiency versus electromagnetic interference. Ensure the design accounts for the 100 V maximum output capability and utilizes appropriate external components for the chosen frequency setting.

LED Driver IC Part Context

This part belongs to the LT8393 family of synchronous buck-boost controllers designed specifically for LED applications. Unlike standard regulators, it focuses on current regulation for lighting loads rather than fixed voltage outputs. The JUFDM variant specifies the leaded QFN package with wettable flanks for improved solder joint inspection.

LED Driver IC Replacement Considerations

Direct replacements within the same family include other LT8393 variants with different package options or temperature grades. Verify that any substitute maintains the 60 V input and 100 V output ratings along with the four-switch topology to ensure functional equivalence in high-voltage LED applications.