狀態 Prod
Vdd(V) 2.7-5.5
通道數 Matrix - 144
RGB Group 32
腳位尺寸(mm) QFN-28 (4×4), SSOP-28
控制接口 I2C - 400kHz
特殊功能 8.3kHz PWM, crossplex scanning architecture, dual blocks of 72 LEDs each with 1/9 scan cycle rate, 8 frames of memory, 8-bit PWM and global current, auto breath features, Audio Sync, Auto. Dimming, improved I2C interface
IC代碼 3731 = 3731
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 S2 = Industrial temp. (-40°C to 85°C)
包裝選項 TR = Tape & Reel
外包裝 Tape on Reel

IS31FL3731C-QFLS2-TR 特徵

  • Supply voltage range: 2.7V to 5.5V 400kHz I2C-compatible interface 0.77VCC threshold logic high control 144 LEDs in dot matrix Individual blink control 8 frames memory for animations Picture mode and animation mode Auto intensity breathing during the switching of different frames LED frames displayed can be modulated with audio signal intensity LED light intensity can be modulated with audio signal intensity
  • QFN-28 (4mm × 4mm) and SSOP-28 package
  • White goods LED application


The IS31FL3731C is a compact LED driver for 144 single LEDs. The device can be programmed via an I2C compatible interface. The high logic (0.77VCC) and low logic (0.2VCC) control threshold are specially designed for white goods and industry application to minimize the impact by the EMC noise. The IS31FL3731C offers two blocks each driving 72 LEDs with 1/9 cycle rate. The required lines to drive all 144 LEDs are reduced to 18 by using the cross-plexing feature optimizing space on the PCB. Additionally each of the 144 LEDs can be dimmed individually with 8-bit allowing 256 steps of linear dimming. To reduce CPU usage up to 8 frames can be stored with individual time delays between frames to play small animations automatically. LED frames can be modulated with audio signal. IS31FL3731C is available in QFN-28 (4mm × 4mm) and SSOP-28 package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +85°C.