LT3475IFE#TRPBF

LED Driver IC Overview

The LT3475IFE#TRPBF is a dual-channel step-down LED driver IC manufactured by Analog Devices Inc. It operates with an input voltage range of 4 V to 36 V and provides two independent adjustable outputs, each capable of delivering up to 1.5 A of switch current. The device utilizes a fixed switching frequency range of 200 kHz to 2 MHz and features PWM dimming control for brightness regulation. Packaged in a 20-lead TSSOP-EP surface-mount package, it supports non-isolated output configurations and includes open LED protection mechanisms.

LED Driver IC Feature Summary

• Dual independent buck channels for driving multiple LED strings
• Integrated high-side switches supporting 1.5 A continuous current per channel
• Wide input voltage capability accommodating various power supply sources
• Precision PWM dimming interface for linear brightness control

LED Driver IC Applications

• Automotive exterior lighting systems
• Industrial LED illumination arrays
• High-brightness general lighting fixtures
• Signage and display backlighting

LED Driver IC Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the IFE variant meets the required industrial temperature range specifications. Ensure the 20-TSSOP-EP footprint matches the target PCB layout constraints. Cross-reference the datasheet revision to validate pinout compatibility with existing designs.

LED Driver IC Selection Notes

Select this component when dual-channel isolation or independent current regulation is required within a single package. The wide input range suits applications with varying supply voltages. Consider the thermal performance of the exposed pad design for high-current operations. Evaluate the switching frequency options against external component size requirements.

LED Driver IC Part Context

This part belongs to the LT3475 family of full-featured LED drivers designed for high-efficiency constant current applications. It integrates power switches and control logic to minimize external component count. The device is optimized for automotive and industrial environments requiring robust performance and precise current regulation across wide operating conditions.

LED Driver IC Replacement Considerations

LT3475IFE#PBF offers identical electrical characteristics but utilizes tube packaging instead of tape-and-reel.