LT3475IFE-1#PBF

LED Driver IC Overview

The LT3475IFE-1#PBF is a dual-channel LED lighting driver IC manufactured by Analog Devices Inc. It utilizes a buck topology to regulate current for high-brightness LEDs. The device operates from a supply voltage range of 4 V to 36 V and supports adjustable output voltages. Each channel delivers an output current of 1.5 A. The switching frequency is programmable between 200 kHz and 2 MHz. It is housed in a TSSOP-20 package with exposed pad and functions within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Dual independent buck channels provide separate regulation for multiple LED strings or color mixing applications.
• Integrated PWM dimming capability allows for precise brightness control without affecting color consistency.
• Open LED protection circuitry detects fault conditions to prevent damage during operation.

LED Driver IC Applications

• Automotive exterior lighting systems requiring dual-channel regulation
• Industrial LED illumination fixtures
• General-purpose high-power LED arrays

LED Driver IC Procurement Notes

Verify the specific suffix designation against official documentation to confirm pinout and feature variations. Confirm RoHS compliance status through the manufacturer's latest datasheet. Ensure the selected package matches the PCB footprint requirements. Validate thermal performance specifications for the intended operating environment before finalizing procurement decisions.

LED Driver IC Selection Notes

Select this component when dual isolated outputs are required from a single controller. Compare input voltage ranges against system power rails. Evaluate thermal dissipation capabilities based on the TSSOP-20 package constraints. Consider the programmable frequency range to optimize external component sizes and EMI performance relative to other drivers in the portfolio.

LED Driver IC Part Context

This part belongs to the LT3475 series of LED drivers designed for demanding lighting applications. It shares architectural similarities with other buck-based LED controllers but distinguishes itself through dual-channel integration. The series targets applications needing compact solutions for multi-string LED configurations.

LED Driver IC Replacement Considerations

LT3475IFE#PBF serves as a parameter-equivalent alternative within the same product family, differing primarily in packaging configuration rather than core electrical functionality.