IS31LT3952-GRLS4-TR

Overview

The IS31LT3952-GRLS4-TR is a single-output DC-DC step-down (buck) LED driver IC from Lumissil Microsystems. It supports PWM dimming and delivers up to 3A of output current. The device operates within an input voltage range of 5V to 75V and functions at switching frequencies between 100 kHz and 1 MHz. It is housed in an 8-SOP-EP package with an exposed pad for thermal management. The component is rated for operating temperatures from -40°C to +125°C, featuring integrated MOSFETs and protections for extended life operation.

Feature Summary

• Integrates power MOSFETs for compact monolithic design
• Supports analog and PWM dimming methods
• Includes built-in protections for reliable operation

Applications

• Architecture Lighting
• Motorcycle Lighting

Procurement Notes

Verify the specific suffix GRLS4 against official Lumissil documentation to confirm pinout and thermal pad configuration. Ensure the procurement channel provides valid RoHS compliance certificates. Confirm that the 8-SOP-EP package dimensions match your PCB footprint requirements before finalizing orders.

Selection Notes

Select this component for high-voltage buck applications requiring up to 3A constant current. It is suitable for designs needing wide input voltage compatibility and integrated power switches. Consider the exposed pad thermal performance for high-power density layouts.

Part Context

This part belongs to the Lumissil H-BLED drivers portfolio, which addresses general lighting applications. The series offers both monolithic-based solutions with integrated power MOSFETs and controller-based options. These drivers are designed for commercial, residential, and automotive markets.

Replacement Considerations

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