IS31FL3800 Smart Integrated Matrix LED Driver with Touch Key Controller FEATURES GENERAL DESCRIPTION IS31FL3800 is an ultra-low power, fully integrated 18x4 Matrix LED Driver matrix LED driver with a touch key controller. It is 18 current sinks designed with an easy to use GUI for touch key tuning 2.7 to 5.5V LED driver supply (VCC) and GPIO configuration. The application of IS31FL3800 Support 18n (n=1~4) LED matrix requires the presence of a host MCU with an I2C configurations master, to poll the status and control the LED drivers. Individual 256 PWM control steps Each LED in the matrix can be dimmed individually with Individual 256 DC current steps 8-bit PWM data and 8-bit DC scaling (Color Calibration) Global 256 current steps data. This allows 256 steps of linear PWM dimming and Programmable H/L logic: 1.4V/0.4V, 2.4V/0.6V 256 steps of adjustable DC current level. Additionally, 29kHz PWM frequency each LEDs open/short state can be detected. The host State lookup registers MCU can poll for the open/short information stored in the Open/Short Registers. Individual open and short error detect function An eleven-channel capacitive touch controller is 180 degree phase delay operation to reduce integrated with on-chip calibration logic which power noise continuously monitors the environment and automatically Capacitive Touch Sensor adjusts the threshold levels to prevent false triggers. Capacitive touch controller with readable key An on-chip IC slave controller with 400kHz capability value through shared GPIO and programmable slave addresses serves as the Individual sensitivity threshold setting for each communication port for the host MCU. An interrupt, touch key INTB, can be configured so it is generated when a Optional multiple-key function trigger event (touched or released) occurs. Trigger or Press and hold function clear condition can be configured by setting the interrupt Automatic calibration register. Individual key calibration IS31FL3800 is available in RoHS compliant package Interrupt output with auto-clear and repeating QFN-60 (7mm7mm). It operates from 2.7V to 5.5V over the temperature range of -40C to +105C. Auto sleep mode for extremely low power Key wake up from sleep mode 400kHz fast-mode IC interface Operating temperature between -40C ~ +105C QFN-60 package APPLICATIONS Home appliance touch control keys Industrial applications Gaming devices IoT devices Lumissil Microsystems www.lumissil.com 1 Rev. C, 08/14/2020 IS31FL3800 BLOCK DIAGRAM Block Diagram of IS31FL3800 Lumissil Microsystems www.lumissil.com 2 Rev. C, 08/14/2020