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AW9656QNR

6-Channel 1X/2X Adaptive Charge Pump White LED Driver with 1-Wire Brightness Control

The AW9656 is a 6-channel 1X/2X adaptive charge pump white LED driver. The device provides a constant current, set by an external resistor, for each LED. The supply voltage range from 2.7V to 5.5V and is ideally suited for all applications powered by a single Li-Ion battery. The AW9656 provides up to 25mA per LED, for a total of 150mA, for the input voltage ranging from 3.3V to 5.5V. High efficiency is achieved by utilizing the proprietary Q-Mode TM technique in combination with very low dropout current sources. The proprietary Q-Mirror TM technique and Min-Detect TM technique are used in the AW9656, which makes the six LEDs current matching to ±0.5%. The AW9656 incorporates a 1-wire interface to program the output current at 16 continuous steps. The AW9656 has a built-in Deglitch circuit for fil- tering the noise of the EN pin. Only three ex- ternal capacitors are required to build a com- plete small and low cost LED backlight solu- tion.

Characteristic

l  Drives up to 6 LEDs at 25mA Each

l  Regulated Output Current with ±0.5% Matching

l  16-Step Linear Scale LED Brightness Control

l  Built-in Deglitch Circuit

l  High Efficiency by Adaptive Mode Selection between 1X and 2X Modes

l  1 MHz Switching Frequency

l  Low Input Ripple and Low EMI

l  2.7V to 5.5V Operating Input Voltage Range

l  LED Failure Detection and Over-voltage Protection

l  Over-current and Over-temperature Protection

l  Less than 0.1μA Quiescent Current in Shutdown Mode

l  Ultra Small 3mm×3mm QFN-16L package


Datasheet

Application note

Product name Type Size Download
AW9656QNR PDF 1.23M
  • Parallel LED Number
    Control Interface
    Current Step
    Topology
    Max Current (mA)
    Min Current (mA)
    Current Accuracy (%)
    Current Matching (%)
    Package (mm)
  • AW9656QNR

    6
    1-Wire
    16
    Charge Pump
    25
    1.31
    ±10
    ±0.5
    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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