LT3746EUHH#PBF

LED Driver IC Overview

The LT3746EUHH#PBF is a 32-channel LED driver IC featuring an integrated buck controller, designed for high-density lighting applications. It operates with a supply voltage range of 6V to 55V and delivers up to 30mA per channel. The device supports PWM dimming frequencies from 205Hz to 1.05MHz and includes open LED protection. Packaged in a 56-pin QFN (5x9mm) with exposed pad, it functions within a temperature range of -40°C to +125°C TJ.

LED Driver IC Feature Summary

• Integrates a synchronous buck controller with 32 independent current-regulated output channels
• Supports precise PWM dimming control for uniform brightness adjustment across all segments
• Includes hardware-based open LED protection to prevent damage during fault conditions

LED Driver IC Applications

• High-density LED backlighting systems
• Digital signage and large-format displays
• Architectural LED lighting arrays

LED Driver IC Procurement Notes

Verify the specific suffix #PBF confirms lead-free compliance and tube packaging format. Confirm the 56-QFN footprint matches the PCB layout requirements. Ensure input voltage specifications align with the system power supply rails before integration.

LED Driver IC Selection Notes

Select this component when a single IC must drive multiple LED strings without external multiplexing. The integrated buck topology reduces external component count compared to linear drivers. Verify thermal dissipation capabilities for the 56-QFN package under maximum load conditions.

LED Driver IC Part Context

This part belongs to the LT3746 family of multi-channel LED drivers. It differs from standard regulators by providing individual channel current regulation rather than a single regulated output. The EUHH suffix denotes the specific 56-lead QFN package variant suitable for surface mount assembly.

LED Driver IC Replacement Considerations

LT3746EUHH#TRPBF offers identical electrical performance but utilizes tape-and-reel packaging instead of tubes.