IS32LT3172-GRLA3-TR

Overview

The IS32LT3172-GRLA3-TR is a single-output linear LED driver IC designed for automotive applications. It features an internal switch and supports PWM dimming with a maximum output current of 200mA. The device operates within a supply voltage range of 2.5V to 5.5V and can drive loads up to 42V. It is housed in an 8-SOP-EP package and is qualified to AEC-Q100 standards, ensuring reliability in demanding environments.

Feature Summary

• Single-output linear architecture with integrated power switch
• Supports high-resolution PWM dimming control
• Automotive-grade qualification compliant with AEC-Q100

Applications

• Automotive exterior lighting systems
• Interior ambient illumination circuits
• General automotive LED driver modules

Procurement Notes

Verify the specific suffix GRLA3-TR against the official Lumissil datasheet to confirm package type and tape-and-reel specifications. Ensure the design accounts for the 2.5V minimum supply voltage and thermal dissipation requirements inherent to linear regulation at higher load voltages.

Selection Notes

Select this component for designs requiring a simple, cost-effective linear solution for low-current automotive LEDs. It is suitable where input voltage remains close to the LED forward voltage drop. Consider alternative topologies if significant voltage headroom exists or if higher efficiency is critical.

Part Context

This part belongs to the IS32LT31xx series of linear LED drivers from Lumissil Microsystems. The series targets automotive markets with integrated protection features and compact packaging. It serves as a foundational component for basic constant-current LED control tasks in vehicle lighting architectures.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.