LT3955IUHE#TRPBF

LED Driver IC Overview

The LT3955IUHE#TRPBF is a high-voltage LED driver IC from Analog Devices, designed for robust lighting applications. It integrates a PWM dimming generator and supports multiple converter topologies including boost, buck, flyback, and SEPIC configurations. The device operates with an input voltage range up to 60V and delivers a switch current of 3.5A. Packaged in a compact 36-lead QFN (5x6mm) format, it ensures efficient thermal performance and space-saving design for industrial and commercial LED systems.

LED Driver IC Feature Summary

• Integrates internal PWM dimming generator for precise brightness control
• Supports versatile topology configurations including boost, buck, flyback, and SEPIC
• High input voltage capability up to 60V for flexible power supply options
• Compact 36-lead QFN package optimized for thermal dissipation

LED Driver IC Applications

• Industrial LED lighting fixtures
• Commercial street lighting systems
• High-bay warehouse illumination
• Automotive exterior lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the 60V input rating matches your system requirements. Ensure compatibility with the 36-lead QFN footprint during PCB layout. Check for RoHS compliance documentation if required by your manufacturing standards. Validate that the 3.5A switch current meets your LED string demands.

LED Driver IC Selection Notes

Choose this component when high input voltage tolerance and multi-topology flexibility are required. The integrated PWM generator simplifies control circuitry compared to external solutions. Consider the QFN package size constraints against available board space. Evaluate thermal management needs given the 3.5A current capability. Compare against lower voltage variants if system input is below 60V.

LED Driver IC Part Context

This part belongs to the LT3955 series of LED drivers from Analog Devices. It shares the same QFN-36 package form factor with other members like the LT3954 and LT3958. Unlike the LT3954 which supports up to 40V, this variant handles higher voltages up to 60V. It differs from the LT3958 which focuses on general switching regulators rather than dedicated LED driving features.

LED Driver IC Replacement Considerations

LT3955IUHE#PBF is the tube-packaged equivalent of this reel-part. LT3954IUHE#PBF offers similar functionality but with a lower 40V maximum input voltage. LT3958IUHE#PBF provides comparable topology support but is categorized as a general switch regulator rather than a dedicated LED driver.