IS32LT3952-GRLA3-TR

Overview

The IS32LT3952-GRLA3-TR is a single-output DC-DC buck LED driver IC manufactured by Lumissil Microsystems. It supports an input voltage range of 4.5V to 40V and delivers up to 1.5A output current. The device features PWM dimming control and integrated spread spectrum technology for EMI reduction. Packaged in an 8-SOP-EP (SOIC) with exposed pad, it operates within a temperature range of -40°C to 125°C. The component holds AEC-Q100 automotive qualification.

Feature Summary

• Integrated buck topology with internal switching capability
• Supports PWM dimming for brightness regulation
• Includes spread spectrum modulation for electromagnetic interference mitigation

Applications

• Automotive exterior lighting systems
• Commercial general lighting fixtures
• Residential LED illumination applications

Procurement Notes

Verify the complete part number including the suffix to ensure correct packaging and specifications. Confirm that the required automotive grade certification aligns with project standards. Check lead times as they may vary based on manufacturing schedules. Ensure compatibility with the target PCB footprint for the 8-SOP-EP package.

Selection Notes

Select this component for designs requiring a single-channel high-current LED drive with buck conversion. It is suitable for applications needing wide input voltage tolerance and automotive reliability. Consider the thermal performance of the exposed pad package for heat dissipation requirements in enclosed spaces.

Part Context

This part belongs to the IS32LT3952 family of H-BLED drivers from Lumissil Microsystems. The family targets general lighting markets with monolithic solutions offering built-in protections. These drivers are designed for extended-life operation in commercial, residential, and automotive sectors.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.