IS31FL3737A-QFLS4-TR

Overview

The IS31FL3737A-QFLS4-TR is a general-purpose LED matrix driver manufactured by Lumissil Microsystems. It supports a 12x12 dot matrix configuration, providing 144 individually addressable LEDs with a 1/12 cycle rate. The device operates on a supply voltage range of 2.7V to 5.5V and delivers an output current of 8mA per channel. It features I2C and PWM dimming capabilities at a frequency of 1MHz. The component is housed in a 40-WFQFN package (5.0mm x 5.0mm) and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports 12x12 LED matrix configurations with individual addressing for each pixel
• Programmable via I2C compatible interface for flexible control
• Integrates linear topology with internal PWM dimming functionality

Applications

• Dot matrix LED displays
• General purpose lighting applications
• Signaling devices requiring matrix patterns

Procurement Notes

Verify the specific suffix QFLS4-TR against the manufacturer's latest datasheet to confirm packaging and tape-and-reel specifications. Ensure the design accommodates the 40-WFQFN footprint dimensions. Confirm that the I2C bus speed requirements align with the device's 1MHz capability. Check for any regional distribution restrictions or obsolescence notices from authorized suppliers before finalizing procurement plans.

Selection Notes

Select this component when a compact solution for driving up to 144 LEDs is required without external multiplexing complexity. It is suitable for designs needing precise current control and dimming via digital interfaces. Consider the thermal performance of the exposed pad QFN package if operating near maximum temperature limits. Verify power supply stability within the 2.7V to 5.5V range to ensure consistent operation across all channels.

Part Context

This part belongs to the IS31FL3737 series of LED display drivers from Lumissil Microsystems. It is designed for high-density LED matrices where space efficiency and low pin count are critical. The series typically includes variants like the IS31FL3737B, which may offer different current ratings or feature sets while maintaining similar form factors and interface protocols for system scalability.

Replacement Considerations

The IS31FL3737B-QFLS4-TR is a related variant within the same family. Verify if the higher output current of the B-series (42mA vs 8mA) is required for the application. Ensure pin compatibility and software register mapping remain consistent between revisions to facilitate direct substitution without hardware redesign.