IS31FL3733B-QFLS4 LED Display Driver IC 48-QFN (I²C Matrix LED Driver with Auto Breath Function)

The IS31FL3733B-QFLS4 is a high-performance LED display driver IC from Lumissil, designed for driving large LED matrices and multi-channel LED lighting applications. Featuring an I²C communication interface, integrated constant-current outputs up to 42mA per channel, and an Auto Breath function, it enables smooth LED animations, brightness control, and visual effects with minimal microcontroller overhead. Packaged in a compact 48-QFN Surface Mount Device package, it is ideal for LED displays, backlighting, indicator panels, gaming peripherals, and consumer electronics.

Key Features -

• High-performance LED display driver IC

• I²C serial communication interface

• Constant-current LED outputs up to 42mA

• Integrated Auto Breath function for LED effects

• Individual LED brightness control

• Supports LED matrix driving applications

• Low power consumption

• Compact 48-QFN Surface Mount Device package

• Suitable for dynamic lighting and display control

• Designed for high-reliability LED applications

Specifications -

• Product Type - LED Display Driver Integrated Circuit

• Model - IS31FL3733B-QFLS4

• Manufacturer - Lumissil

• Product Category - LED Display Driver

• Driver Type - Constant Current LED Driver

• Communication Interface - I²C

• Maximum Output Current - 42mA per Channel

• Maximum Supply Current - 3mA

• Features - Auto Breath Function

• Package Type - QFN-48

• Mounting Type - Surface Mount Device (SMD/SMT)

Applications -

• LED matrix displays

• RGB LED lighting systems

• Decorative lighting

• Keypad backlighting

• Gaming keyboards

• Consumer electronics

• Industrial control panels

• Status indicator displays

• Smart home devices

• Embedded electronic systems