IS32LT3131A-ZLA3-TR

Overview

The IS32LT3131A-ZLA3-TR is a linear LED driver IC featuring twelve constant current channels. It supports PWM dimming with an output current of 75 mA per channel. The device operates within a supply voltage range of 5 V to 42 V and functions at temperatures from -40°C to +125°C. Packaged in a 28-eTSSOP, it integrates protections for automotive lighting applications.

Feature Summary

• Twelve-channel constant current output capability
• Integrated PWM dimming control interface
• Automotive-grade reliability and thermal protection

Applications

• Automotive interior lighting systems
• Ambient illumination modules
• High-density LED array drivers

Procurement Notes

Verify the specific suffix ZLA3-TR against the manufacturer's latest datasheet to confirm package dimensions and tape-and-reel specifications. Ensure compatibility with the target PCB footprint for the 28-eTSSOP enclosure. Confirm that the 42 V maximum supply rating aligns with the system's electrical requirements before integration.

Selection Notes

Select this component when a high channel count is required for uniform LED distribution. The integrated linear topology simplifies design by reducing external component count compared to switching solutions. Verify that the 75 mA output current meets the brightness requirements of the connected LED strings without exceeding thermal limits.

Part Context

This part belongs to the IS32LT31xx family of high-side linear LED drivers designed for automotive environments. The series offers various channel configurations to address different lighting densities. The IS32LT3131A variant specifically provides twelve channels, balancing complexity and coverage for extensive lighting zones.

Replacement Considerations

Check Lumissil documentation for direct pin-compatible upgrades within the IS32LT31xx series. Verify if higher current variants or different channel counts offer better performance for the specific application constraints.