LT3477IUF#TRPBF

LED Driver IC Overview

The LT3477IUF#TRPBF is a micropower boost converter featuring an internal 3A, 42V switch and dual rail-to-rail current sense amplifiers. It operates with an input voltage range of 2.3V to 25V and delivers up to 2.66A output current. The device supports switching frequencies from 200kHz to 3.5MHz and maintains a quiescent current of 5mA. It functions as a constant-current, constant-voltage source by combining traditional voltage feedback with two unique current feedback loops. The component is housed in a QFN-20 package and operates within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates dual rail-to-rail current sense amplifiers for precise input current limiting
• Combines voltage feedback with current feedback loops for CC/CV operation
• Features an internal high-voltage switch capable of handling up to 42V

LED Driver IC Applications

• LED drivers requiring accurate input current limiting
• Buck-boost LED driver configurations for wide input voltage ranges
• General step-up DC/DC conversion applications

LED Driver IC Procurement Notes

Verify the suffix #TRPBF indicates tape and reel packaging versus #PBF tube packaging when sourcing. Confirm availability status as supply may be limited or restricted. Ensure the I-grade industrial temperature rating matches design requirements. Cross-reference datasheet revisions to confirm pinout and electrical specifications remain consistent with previous orders.

LED Driver IC Selection Notes

Select this part for applications requiring simultaneous voltage regulation and strict input current limiting. The dual current sense architecture distinguishes it from standard boost converters. Consider the 2.3V minimum input voltage for battery-powered systems. Evaluate thermal performance in the QFN-20 package for high-current scenarios.

LED Driver IC Part Context

This component belongs to the LT3477 series of micropower boost converters manufactured by Analog Devices. It shares architectural similarities with other parts in the family but is distinguished by its specific industrial temperature grade and packaging variant. The series is designed for efficient power management in portable and industrial electronics.

LED Driver IC Replacement Considerations

LT3477IUF#PBF is the tube-packaged equivalent of this part number.