IS32LT3140B-GRLA3-TR

Overview

The IS32LT3140B-GRLA3-TR is a single-channel linear LED driver IC manufactured by Lumissil Microsystems. It provides a constant output current of 450mA and supports PWM dimming. The device integrates a thermal shunt resistor for enhanced thermal management. It operates within an extended temperature range of -40°C to +125°C and is housed in an 8-SOP-EP package with dimensions of 4.9mm x 6.0mm.

Feature Summary

• Integrates a thermal shunt resistor for improved heat dissipation
• Supports PWM dimming control for brightness adjustment
• Provides constant current regulation for LED loads

Applications

• Automotive interior lighting systems
• General illumination applications requiring high reliability
• Industrial lighting fixtures

Procurement Notes

Verify the specific suffix GRLA3-TR against the manufacturer's latest datasheet to confirm pinout, packaging, and environmental compliance status. Cross-reference the Mouser part number 870-IS32LT3140BGRLA3TR or DigiKey identifier to ensure accurate sourcing from authorized channels. Confirm availability status as supply conditions may vary.

Selection Notes

Select this component for designs requiring a single-channel 450mA drive with integrated thermal protection. The SOP-8-EP package suits space-constrained PCB layouts. Ensure the input voltage exceeds the LED string forward voltage plus dropout requirements. Verify that the application environment falls within the specified -40°C to +125°C operating range.

Part Context

This part belongs to the IS32LT31xx series of linear LED drivers from Lumissil Microsystems. These components are designed for automotive-grade reliability, often featuring AEC-Q100 qualification. The series focuses on integrating protection features like thermal shunting directly into the driver architecture to simplify system design.

Replacement Considerations

IS32LT3140B-ZLA3-TR is a documented alternative variant within the same product family.