6-Channels 1-Wire Brightness Adaptive Four Mode Charge Pump White LED Driver

The AW9666 is a 6-channel Four mode fractional charge pump, parallel connection white LED driver. The proprietary Q-Mirror TM change technique, and low Dropout voltage, can make the Driver circuit work at high efficiency, then make Li-Ion battery work at one long time. AW9666 can Driver more than 6 LEDs, and 21mA each. The device provides a constant current, set by an external resistor, for each LED. Q-Mirror TM technique can make every 2 LED’s current match at ±1%(typical). The AW9666 use 1-Wire Brightness Control, 16-Step Linear Scale LED Brightness Control. The interference caused by the PWM dimming mode is effectively avoided. Deglitch circuit can effectively eliminate the influence of the glitch signal. AW9666 only need four capacitors make the system design easier, and use less PCB. The AW9666 is available in a small 3mm*3mm QFN-16L package and is specified over the -40℃ to +85℃ temperature range.


l  High efficiency 1.33X charge pump mode

l  Four fractional times charge pump:1X1.33X1.5 X and 2X.

l  Specific Q-MirrorTM technique, change mode intelligently basing on input voltage and load, efficiency up to 83%

l  Drive up to 6 LEDs with 21mA Maximum Each

l  Q-MirrorTM technique ensuring LEDs Current within ±1%(typical)

l  Low Input Ripple and Low EMI

l  16-Step Linear LED Brightness Control

l  Deglitch circuit eliminating interference at EN pin

l  ESD protection±8kV (HBM)

l  Over voltage, Over current and Over temperature Protection

l  <0.1μA Quiescent Current in Shutdown Mode

l  3mm*3mm QFN-16L package


Application note

Product name Type Size Download
AW9666QNR PDF 1.17M
  • Parallel LED Number
    Control Interface
    Current Step
    Max Current (mA)
    Min Current (mA)
    Current Accuracy (%)
    Current Matching (%)
    Package (mm)
  • AW9666QNR

    Charge Pump
    WBQFN 3X3-16L
Package form Number of pins Long(mm) Width(mm) Thick(mm) Pin spacing(mm) Heat sink Package drawing
QFN 3.0×3.0×0.75 -16L 16 3.0 3.0 0.75 0.5 Y
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