LT3474EFE#TRPBF

LED Driver IC Overview

The LT3474EFE#TRPBF is a monolithic DC-DC step-down switching regulator designed for LED lighting applications. It integrates a high-side N-channel power switch capable of delivering up to 1A output current. The device operates from an input voltage range of 3.5V to 36V and supports adjustable switching frequencies between 200kHz and 2MHz. It features PWM dimming control for brightness adjustment and includes comprehensive protection mechanisms such as cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout.

LED Driver IC Feature Summary

• Integrates a high-side N-channel power switch for compact solution design
• Supports wide input voltage range suitable for various supply sources
• Enables precise brightness control via external PWM dimming signal
• Includes internal compensation and protection against overcurrent and overheating

LED Driver IC Applications

• LED backlighting for displays
• General LED illumination systems
• Battery-powered lighting devices

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm that the component meets RoHS3 compliance requirements for your manufacturing process. Ensure the operating temperature range aligns with your system's environmental specifications. Cross-reference the datasheet revision date to ensure compatibility with your design documentation.

LED Driver IC Selection Notes

Select this component when a single-channel buck converter with integrated switch is required for LED driving. It is suitable for designs needing PWM dimming capability without external linear regulators. Consider the thermal performance in the TSSOP-EP package for your PCB layout. Evaluate the switching frequency setting against EMI constraints and inductor size requirements.

LED Driver IC Part Context

This part belongs to the LT3474 family of LED drivers from Analog Devices. It shares architectural similarities with other members like the LT3474IFE but differs in packaging. The series is targeted at efficient, space-constrained lighting solutions requiring constant current regulation.

LED Driver IC Replacement Considerations

LT3474IFE#PBF is a parameter-equivalent alternative available in tube packaging. LT3474IFE#TRPBF offers identical electrical characteristics in a different reel configuration. Verify pinout and thermal pad connectivity before substitution.