IS31FL3741A-QFLS4-TR ISSI

IS31FL3741A 399 DOTS MATRIX LED DRIVER March 2020 GENERAL DESCRIPTION FEATURES The IS31FL3741A is a general purpose 399 LED Supply voltage range: 2.7V ~ 5.5V Matrix programmed via an I2C compatible interface. 39 Current Sink 9 SW matrix size: drive up to Each LED can be dimmed individually with 8-bit PWM 351 LEDs or 117 RGBs data and 8-bit scaling data which allowing 256 steps of Individual 256 PWM control steps linear PWM dimming and 256 steps of DC current Individual 256 DC current steps adjustable level. Global 255 current setting Additionally each LED open and short state can be SDB rising edge reset I2C module detected, IS31FL3741A store the open or short Programmable H/L logic: 1.4V/0.4V, 2.4V/0.6V information in Open-Short Registers. The Open-Short 29kHz/3.6kHz/1.8kHz/900Hz PWM frequency Registers allowing MCU to read out via I2C 1MHz I2C-compatible interface compatible interface. Inform MCU whether there are LEDs open or short and the locations of open or short interrupt and state lookup registers LEDs. Individual open and short error detect function De-ghost The IS31FL3741A operates from 2.7V to 5.5V and QFN-60 (7mm7mm) package features a very low shutdown and operational current. IS31FL3741A is available in QFN-60 (7mm7mm) APPLICATIONS package. It operates from 2.7V to 5.5V over the Hand-held devices for LED display temperature range of -40C to +125C. Gaming device (Keyboard, Mouse etc.) LED in white goods application Music box TYPICAL APPLICATION CIRCUIT Figure 1 Typical Application Circuit (Single Color: 399) Lumissil Microsystems www.lumissil.com 1 Rev. C, 03/16/2020 IS31FL3741A TYPICAL APPLICATION CIRCUIT (CONTINUED) 5V 15 PVCC 24 SW9 1 F 0.1 F 23 25 SW8 PVCC 1 F 0.1 F SW2 14 SW1 SW3 SW4 SW5 SW6 SW7 SW8 SW9 AVCC 17 1 F 0.1 F SW2 16 51 SW1 CS39 V IO/MCU 20 CS38 100k 2k 2k 20 IS31FL3741A 9 CS37 SDA 10 SCL Micro 7 Controller INTB 11 SDB 6 51 CS39 CS3 5 100k 0.1 F CS38 20 CS2 20 CS1 13 ISET 27 8 CS2 ISET ADDR 26 10k 12 CS1 GND 36,55 Figure 2 Typical Application Circuit (RGB Color: 139) Note 1: The IC and LED should be placed far away from any local antenna in order to prevent EMI contamination. Lumissil Microsystems www.lumissil.com 2 Rev. C, 03/16/2020