IS31FL3268-QFLS4-TR

Overview

The IS31FL3268-QFLS4-TR is a 24-channel LED lighting driver IC manufactured by Lumissil Microsystems. It features 16-bit PWM resolution for precise brightness control and operates within a QFN-40 package measuring 5.0mm x 5.0mm. The device supports SPI dimming and delivers up to 51mA per output channel in a linear shift register configuration.

Feature Summary

• Provides 24 independent constant current channels for uniform LED illumination
• Utilizes 16-bit PWM resolution to enable smooth brightness adjustment and color mixing
• Integrates SPI interface for efficient serial data communication and control

Applications

• Automotive interior ambient lighting systems
• General solid-state lighting fixtures
• Architectural accent lighting arrays

Procurement Notes

Verify the specific suffix QFLS4 against official Lumissil documentation to confirm automotive qualification status and tape-and-reel packaging specifications. Ensure compatibility with existing PCB footprints for the 40-pin QFN form factor before finalizing procurement orders.

Selection Notes

Select this component when high-resolution grayscale control is required for multi-channel LED arrays. The integrated SPI interface reduces microcontroller pin usage compared to parallel alternatives, while the compact QFN-40 package suits space-constrained designs requiring dense channel counts.

Part Context

This part belongs to the IS31FL3x series of industrial-grade LED drivers from Lumissil. These devices are designed for applications demanding wide input voltage ranges and EMI noise reduction capabilities, distinguishing them from standard consumer-grade lighting controllers through enhanced reliability standards.

Replacement Considerations

Consult Lumissil datasheets for direct pin-compatible substitutes within the IS31FL32xx family. Verify channel count and package dimensions match requirements before substituting with other matrix drivers.