IS31FL3237-QFLS4-TR

狀態 Prod
Vdd(V) 2.7-5.5
通道數 36
文件 Eval Board, Code, Arduino
RGB Group 12
腳位尺寸(mm) QFN-44(5x5)
控制接口 I2C - 1MHz
特殊功能 Noise Reduction, Spread Spectrum, 16-bt PWM and White Balance, open and short detect, 38mA per channel, pin compatible with IS31FL3236A
腳位/封裝 QF = QFN
焊料類型 L = Lead-free (RoHS Compliant)
產品系列 31 = Commercial/Industrial Analog
IC代碼 3237 = 3237
產品類別 FL = FxLED Driver
Temperature Grade S4 = Industrial temp. (-40°C to 125°C)
包裝選項 TR = Tape & Reel
外包裝 Tape on Reel

IS31FL3237-QFLS4-TR 特徵

  • 2.7V to 5.5V VCC supply
  • Pin to pin with IS31FL3236/IS31FL3236A (QFN-44, 5mm×5mm)
  • 1MHz I2C interface, automatic address increment function with readout function
  • Four selectable I2C addresses
  • Modulate LED brightness with 256/1024/4096/65536 steps PWM method
  • Modulate LED DC current with 256 method
  • Global 256 analog global current control
  • PWM frequency selectable
  • Open short detect function
  • Temperature detect function
  • Spread spectrum
  • QFN-44 (5mm×5mm) package
  • AI-speakers and smart home devices
  • LED in home appliances

概觀

IS31FL3237 is an LED driver with 36 constant current channels. Each channel can be pulse width modulated (PWM) by 16 bits for smooth LED brightness control. In addition, each channel has an 8-bit output current control register which allows fine tuning the current for rich RGB color mixing, e.g., a pure white color LED application. The maximum output current of each channel is designed to be 38mA, which can be adjusted by one 8-bit global control register. Proprietary programmable algorithms are used in IS31FL3237 to minimize audible noise caused by the MLCC decoupling capacitor. All registers can be programmed via a high speed I2C (1MHz). IS31FL3237 can be turned off with minimum current consumption by either pulling the SDB pin low or by using the software shutdown feature. IS31FL3237 is available in QFN-44 (5mm×5mm) package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +125°C.