IS31FL3746B-QFLS4-TR

狀態 Prod
Vdd(V) 2.7-5.5
通道數 18xn(n=1~4) Matrix 72
文件
RGB Group 24
腳位尺寸(mm) QFN-32 (4×4)
控制接口 SPI - 12MHz
特殊功能 29kHz PWM, 8-bit (PWM, Dot Correction, global current), VIO, De-Ghost, EMI reduction, programmable matrix configuration (18xn)
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 3746 = 3746
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

IS31FL3746B-QFLS4-TR 特徵

  • Supply voltage range: 2.7V to 5.5V
  • 18 current sinks (Maximum)
  • Support 18×n (n=1~4) LED matrix configurations
  • Global 256 DC current steps
  • SDB rising edge reset SPI module
  • 29kHz PWM frequency
  • 12MHz SPI interface
  • State lookup registers
  • 180 degree phase delay operation to reduce Individual open and short error detect function power noise
  • De-Ghost
  • QFN-32 (4mm×4mm) package
  • Hand-held devices for LED display
  • Gaming device (Keyboard, Mouse etc.)

概觀

The IS31FL3746B is a general purpose 18×n (n=1~4) LED Matrix programmed via 12MHz SPI interface. Each LED can be dimmed individually with 8-bit PWM data and 8-bit DC scaling data which allowing 256 steps of linear PWM dimming and 256 steps of DC current adjustable level. Additionally each LED open state can be detected, IS31FL3746B store the open information in Open- Registers. The Open Registers allowing MCU to read out via SPI, inform MCU whether there are LEDs open or short LEDs. The IS31FL3746B operates from 2.7V to 5.5V and features a very low shutdown and operational current. IS31FL3746B is available in QFN-32 (4mm×4mm) package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +125°C.