LT3745EUJ#PBF

LED Driver IC Overview

The LT3745EUJ#PBF is a 16-channel LED driver IC featuring an integrated buck controller. It supports output currents up to 75 mA per channel with a maximum supply voltage of 55 V and output voltage up to 36 V. The device operates at switching frequencies between 200 kHz and 1 MHz, supporting PWM dimming. It is housed in a 40-WFQFN exposed pad package and functions within a temperature range of -40°C to 125°C TJ.

LED Driver IC Feature Summary

• Integrates a step-down (buck) DC-DC controller for efficient power management
• Provides independent current regulation across 16 distinct output channels
• Supports high-frequency PWM dimming for precise brightness control

LED Driver IC Applications

• LED backlighting systems
• Signage illumination
• General LED lighting drivers

LED Driver IC Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Check for Product Change Notifications regarding package top marks or bond wire modifications. Confirm RoHS compliance status and ensure the specific suffix matches design requirements. Review datasheet revisions for any parameter updates before finalizing procurement specifications.

LED Driver IC Selection Notes

Select this component when designing multi-channel LED arrays requiring integrated buck conversion. Ensure input voltage stays within the 6 V to 55 V range. Verify thermal performance for the 40-QFN package under expected load conditions. Confirm that the 75 mA per channel limit meets the target LED string requirements without exceeding junction temperature limits.

LED Driver IC Part Context

This part belongs to the LT3745 family of LED lighting driver ICs from Analog Devices. The series is designed for applications requiring multiple regulated outputs from a single controller. Variants within the family may differ in output current ratings or specific interface features, but share the core buck-controlled architecture.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate cross-reference options only after verifying electrical compatibility and pinout alignment with the original specification sheet.