輸出數 8
類型 Constant Current
電流 - 輸出/通道 (mA) 40mA or 320mA in parallel
電壓 - 電源 2.7-5.5
ISD(uA) 1.6
Intensity Ctrl. PWM
腳位/封裝 QFN-16(3x3)
文件 Eval Board
狀態 Prod
產品系列 31 = 商業/工業模擬
產品類別 BL = LCD背光的白色LED驅動器
IC代碼 3230
焊接 L = 無鉛
温規 S2 = 工業級 (-40ºC to 85ºC)
外包裝 卷轴包
相關IC编號

IS31BL3230-QFLS2-TR 特徵

  • Ultra low headroom voltage
  • Cost effective LED driver
  • Current adjustable via external resistors
  • Best noise and efficiency performance
  • Highly integrated design, minimal component
  • 1.6μA (Typ.) shutdown current Small package QFN-16 (3mm×3mm)

概觀

The IS31BL3230 provides eight regulated current sources, each delivers up to 90mA of load current with careful selection of external sense resistors, all outputs at the IS31BL3230 may be connected in parallel to enable the current through the LED to be as high as 720mA. The IS31BL3230 does not include a charge pump and therefore has no noise and significantly improved the efficiency. The external resistor, RSET1, determines the constant current output of ports LED1 thru LED4, while resistor RSET2 determines the constant current output of ports LED5 thru LED8. Brightness can be controlled with PWM techniques. The constant current source is set with two external sense resistors. Alternatively, a PWM signal applied to the PWM pin can vary the perceived brightness of the LED. The device is in shut down mode when the PWM Input is logic low.