狀態 Prod
Vdd(V) 2.7-5.5
通道數 12x16 Matrix-192
文件 Eval Board, Code, USBTOOL
RGB Group 64
腳位尺寸(mm) QFN-48 (6x6), eTQFP-48
控制接口 I2C - 1MHz
特殊功能 7.4kHz, 8-bit PWM, true multiplex matrix arch. for RGB, 1/12scan. Individual LED open/short detect, de-ghost, auto breath, cascade synch, -40C - 125C
IC代碼 3733 = 3733
產品系列 31 = Commercial/Industrial Analog
產品類別 FL = FxLED Driver
腳位/封裝 QF = QFN
焊料類型 L = Lead-free (RoHS Compliant)
Temperature Grade S4 = Industrial temp. (-40°C to 125°C)
包裝選項 TR = Tape & Reel
外包裝 Tape on Reel

IS31FL3733-QFLS4-TR 特徵

  • Supply voltage range: 2.7V to 5.5V
  • 16 current source outputs for row control
  • 12 switch current inputs for column scan control
  • Up to 192 LEDs (12×16) in dot matrix
  • Programmable 12×16 (64 RGBs) matrix size with de-ghost function
  • 1MHz I2C-compatible interface
  • Selectable 3 Auto Breath Modes for each dot
  • Auto Breath Loop Features interrupt pin inform MCU Auto Breath Loop completed
  • Auto Breath offers 128 steps gamma current, interrupt and state look up registers Individual on/off control Individual 256 PWM control steps Individual Auto Breath Mode select Individual open and short error detect function
  • 256 steps Global Current Setting
  • Cascade for synchronization of chips
  • QFN-48 (6mm×6mm) and eTQFP-48 packages
  • Mobile phones and other hand-held devices for LED display
  • Gaming device (Keyboard, Mouse etc.)


The IS31FL3733 is a general purpose 12×16 LEDs matrix driver with 1/12 cycle rate. The device can be programmed via an I2C compatible interface. Each LED can be dimmed individually with 8-bit PWM data which allowing 256 steps of linear dimming. IS31FL3733 features 3 Auto Breathing Modes which are noted as ABM-1, ABM-2 and ABM-3. For each Auto Breathing Mode, there are 4 timing characters which include current rising / holding / falling / off time and 3 loop characters which include Loop-Beginning / Loop-Ending / Loop-Times. Every LED can be configured to be any Auto Breathing Mode or No- Breathing Mode individually. Additionally each LED open and short state can be detected, IS31FL3733 store the open or short information in Open-Short Registers. The Open-Short Registers allowing MCU to read out via I2C compatible interface. Inform MCU whether there are LEDs open or short and the locations of open or short LEDs. The IS31FL3733 operates from 2.7V to 5.5V and features a very low shutdown and operational current. IS31FL3733 is available in QFN-48 (6mm×6mm) and eTQFP-48 packages. It operates from 2.7V to 5.5V over the temperature range of -40°C to +125°C.



IS31FL3733-TQLS4 IS31FL3733-TQLS4-TR