LT3475IFE-1#TRPBF

LED Driver IC Overview

The LT3475IFE-1#TRPBF is a dual-channel, non-isolated 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. The device integrates internal power switches and supports switching frequencies between 200 kHz and 2 MHz. Key electrical characteristics include a maximum supply current of 8 mA and operation within a temperature range of -40°C to +125°C. It utilizes a 20-pin TSSOP-EP package for surface mount installation.

LED Driver IC Feature Summary

• Dual-channel architecture providing independent control for two separate LED loads
• Integrated PWM dimming capability for precise brightness regulation
• Built-in open LED protection circuitry to safeguard against load faults
• Adjustable switching frequency allows optimization for external component size

LED Driver IC Applications

• General LED lighting systems requiring dual-zone control
• Automotive interior and exterior illumination modules
• Industrial backlighting applications
• High-efficiency DC-DC conversion for LED arrays

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the -1 variant designation aligns with the required pinout or functional configuration for the target design. Ensure compatibility with the 20-TSSOP-EP thermal pad requirements during PCB layout. Cross-reference the manufacturer's latest datasheet for any updates regarding RoHS compliance or material declarations prior to final procurement.

LED Driver IC Selection Notes

Select this component when dual independent LED channels are required from a single controller. The wide input voltage range suits battery-powered or automotive bus architectures. Consider the thermal performance of the TSSOP-EP package for high-current applications. Evaluate the need for external synchronization if operating near the upper frequency limits. Verify that the 1.5 A per channel output meets the specific LED string requirements without exceeding thermal constraints.

LED Driver IC Part Context

This part belongs to the LT3475 family of dual-channel LED drivers designed for high-efficiency lighting solutions. It complements other variants like the LT3475IFE and LT3475EFE, differing primarily in packaging and temperature grade specifications. The series is engineered for applications demanding compact footprints and robust fault protection mechanisms in regulated LED environments.

LED Driver IC Replacement Considerations

LT3475IFE#PBF serves as a parameter-equivalent alternative in tube packaging. LT3475EFE#PBF offers the same functionality in an SOIC package. Verify pin compatibility and thermal dissipation capabilities before substituting these parts.