IS32FL3746B-QWLA3-TR

Overview

The IS32FL3746B-QWLA3-TR is an LED driver IC featuring 18 constant current channels. It supports PWM dimming with a frequency of 312kHz and includes a 6+2-bit dither mode for high-resolution control. The device operates on a supply voltage range of 2.7V to 5.5V, delivering an output current between 32.1mA and 36.9mA per channel. It utilizes I2C or SPI interfaces for communication and is housed in a 32-WFQFN package.

Feature Summary

• Configurable matrix size supporting up to 33x12 dimensions
• Integrated multi-topology outputs with selectable bus interfaces
• High-frequency PWM generation with dithering capabilities

Applications

• Automotive intelligent signaling displays
• High pixel count matrix LED arrays
• Vehicle exterior lighting systems

Procurement Notes

Verify the specific suffix QWLA3 against the manufacturer's latest datasheet to confirm pinout and electrical characteristics match the design requirements. Ensure the 32-WFQFN footprint aligns with the PCB layout guidelines provided in the official documentation before finalizing procurement.

Selection Notes

Select this component for applications requiring high-density LED matrices with precise current regulation. The integrated dither mode and high PWM frequency make it suitable for visual quality-sensitive automotive displays. Verify interface compatibility with the host controller when choosing between I2C and SPI modes.

Part Context

This part belongs to the IS32FL37xx series of configurable matrix LED drivers designed for automotive and industrial signaling. The series emphasizes high integration and scalability, allowing designers to configure matrix sizes to fit specific form factors while maintaining synchronized operation across multiple devices on a single bus.

Replacement Considerations

Check for IS32FL3761 as a potential alternative for larger matrix configurations. Verify pin-to-pin compatibility and software register mapping differences before substitution.