LT3466EFE

LED Driver IC Overview

The LT3466EFE is a dual white LED step-up converter featuring integrated Schottky diodes. It operates from an input voltage range of 2.7V to 24V, driving up to 20 white LEDs with two independent channels supporting 10 LEDs each. The device utilizes current-mode control with pulse width modulation for stable regulation. Key electrical parameters include a programmable switching frequency between 200kHz and 2MHz, a maximum output voltage limit of 42V for open-circuit protection, and high conversion efficiency up to 81%. It is housed in a 10-pin HVSON package measuring 3mm x 3mm.

LED Driver IC Feature Summary

• Dual independent boost converters designed for uniform current distribution across multiple LED strings
• Integrated Schottky diodes eliminate external components to simplify circuit design
• Programmable switching frequency allows optimization for size and efficiency requirements
• Built-in soft-start limits inrush current while open-circuit protection clamps output voltage

LED Driver IC Applications

• Backlighting for mobile phone displays
• Sub-display illumination in PDAs and handheld devices
• Camera flash and indicator lighting in digital cameras
• Automotive interior and exterior LED lighting systems

LED Driver IC Procurement Notes

Verify the complete part number including suffixes such as #TRPBF or #PBF against official Analog Devices documentation to ensure correct packaging and lead-free status. Confirm that the specific variant matches the required thermal performance and regulatory compliance for the target application environment. Cross-reference datasheet revisions to ensure compatibility with existing design specifications.

LED Driver IC Selection Notes

Select this component when designing dual-channel LED drivers requiring wide input voltage tolerance and compact footprint. Evaluate the trade-off between switching frequency selection and external passive component sizes. Ensure the total LED string voltage does not exceed the internal clamp limit during fault conditions. Consider thermal dissipation capabilities within the small DFN package for high-current applications.

LED Driver IC Part Context

The LT3466 belongs to Analog Devices' portfolio of specialized power management ICs focused on portable electronics. It complements other LED driver solutions by offering dual-channel integration without sacrificing efficiency. The device addresses the need for precise brightness control in space-constrained mobile and automotive interfaces where component count reduction is critical.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.