LT3743EUFD#PBF

LED Driver IC Overview

The LT3743EUFD#PBF is a high-current synchronous step-down DC/DC controller designed for LED lighting applications. It operates with an input voltage range of 6V to 36V and supports switching frequencies from 200kHz to 1MHz. The device delivers up to 20A output current in a single-channel configuration. It features adjustable output voltage, PWM dimming capability, and open LED protection. The component is housed in a 28-WFQFN exposed pad package and functions within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Synchronous buck topology optimized for high-current LED driving
• Three-state control interface supporting PWM dimming
• Integrated protection mechanisms including open LED detection

LED Driver IC Applications

• High-power LED lighting systems
• Industrial illumination fixtures
• Automotive exterior lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates lead-free tin ball packaging compliant with RoHS standards. Confirm the EUFD variant corresponds to the 28-WFQFN package type rather than TSSOP alternatives. Ensure compatibility with reference designs such as DC1470A for proper implementation. Check for restricted supply status updates from Analog Devices prior to ordering.

LED Driver IC Selection Notes

Select this controller when designing buck converters requiring up to 20A continuous current for LED strings. The wide input voltage range suits battery-powered or automotive sources. Consider thermal management requirements due to high current handling. Verify that the 28-WFQFN package fits the PCB layout constraints compared to other LT3743 variants.

LED Driver IC Part Context

This part belongs to the LT3743 series of fixed-frequency synchronous step-down controllers. It shares architectural similarities with other Linear Technology LED drivers but offers specific pinout and package variations. The EUFD designation distinguishes it from TSSOP packages like the LT3743IFE, providing a different footprint for surface-mount assembly.

LED Driver IC Replacement Considerations

LT3743IUFD#PBF serves as a direct substitute with identical electrical characteristics but utilizes a 28-QFN package instead of WFQFN. LT3743IFE#PBF offers similar functionality but employs a TSSOP-28 package. Verify package dimensions and thermal pad connectivity before swapping.