IS31FL3761-QFLS4-TR

Overview

The IS31FL3761-QFLS4-TR is a configurable dot matrix LED driver IC from Lumissil Microsystems, housed in a 60-WFQFN (7x7 mm) package. It supports a matrix size of 33 x n, where n ranges from 2 to 12, enabling up to 396 LEDs on a single synchronized bus. The device operates within a supply voltage range of 2.7V to 5.5V and delivers an output current of 30mA per channel. It features selectable I²C (1MHz) or SPI (12MHz) interfaces for control. The component includes a 312kHz PWM frequency with a 6+2-bit dither mode and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Configurable matrix architecture supporting scalable pixel counts up to 396 LEDs
• Dual interface capability with selectable high-speed I²C or SPI communication protocols
• Integrated dithered PWM generation with 6+2-bit resolution for artifact-free display rendering

Applications

• Automotive intelligent signaling displays
• High pixel count dot matrix signage
• Configurable LED matrix lighting systems

Procurement Notes

Verify the specific suffix QFLS4-TR against the manufacturer's latest datasheet to confirm pinout compatibility and tape-and-reel specifications. Ensure that the selected communication interface (I²C or SPI) matches the host controller capabilities. Confirm that the thermal performance of the 60-QFN package meets the system requirements for the intended operating temperature range.

Selection Notes

Select this component when designing systems requiring a large number of addressable LEDs managed by a single controller. The configurable matrix size allows flexibility in display dimensions without changing the driver IC. Consider the 30mA output current limit when determining LED brightness and series resistor values. The choice between I²C and SPI should be based on the available microcontroller resources and required data throughput speed.

Part Context

This part belongs to the IS31FL37xx series of LED drivers from Lumissil Microsystems, designed for complex matrix applications. It complements other models like the IS31FL3738 for smaller matrices and the IS31FL3776 for different interface configurations. The series focuses on providing high integration and synchronization capabilities for automotive and industrial display solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Direct replacement requires verifying electrical parameters, pin compatibility, and software register maps with alternative components from Lumissil or other manufacturers.