IS32LT3177-STLA3-TR

Overview

The IS32LT3177-STLA3-TR is a single-output linear LED driver IC manufactured by Lumissil Microsystems. It provides a constant current output of 150mA and supports PWM dimming functionality. The device operates within a supply voltage range of 5V to 42V, with a maximum output voltage of 42V. Packaged in a SOT-23-6 surface-mount format, it is designed for automotive applications and holds AEC-Q100 qualification. The component functions as a high-side linear regulator suitable for general lighting tasks.

Feature Summary

• Single-channel linear regulation architecture
• Integrated PWM dimming capability
• Automotive-grade reliability certification

Applications

• Automotive exterior lighting systems
• General illumination circuits
• Constant current LED regulation

Procurement Notes

Verify the specific suffix STLA3 against the manufacturer's latest datasheet to confirm pinout and electrical specifications match the design requirements. Confirm that the SOT-23-6 package dimensions align with the PCB footprint. Ensure the procurement channel provides valid traceability documentation for automotive-grade components.

Selection Notes

Select this component when a single-channel, low-pin-count solution is required for automotive LED applications. It is appropriate for designs needing integrated PWM dimming without external microcontroller intervention for basic control. Consider the thermal performance of the SOT-23-6 package relative to the expected power dissipation at 150mA output current.

Part Context

This part belongs to the IS32LT31xx family of high-side linear LED drivers from Lumissil Microsystems. These devices are engineered for robustness in automotive environments, offering simplified design through integrated protection features. The series targets applications requiring reliable constant current regulation with minimal external component count.

Replacement Considerations

The IS32LT3170-STLA3-TR is documented as a similar substitute part number by the manufacturer.