IS31BL3230

LED 8
Status Prod
Vdd(V) 2.7~5.5
ISD(uA) 1.6
Document Eval Board
IOUT(mA) 40mA or 320mA in parallel
Pkg-Pin(mm) QFN-16(3x3)
Type Of Driver Constant Current
Intensity Ctrl. PWM
Product Family 31 = Commercial/Industrial Analog
Part Number 3230 = 3230
Product Type BL = White LED Driver for LCD Backlight
Package option blank = Tray or Tube

IS31BL3230 Features

  • 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)

Overview

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.

 

Related Part Number(s)

Description Stock Qty Available Qty
IS31BL3230-QFLS2-TR 2,350