High Efficiency, Support 0.3% PWM Dimming Boost WLED Driver

The AW9962E is a white LED driver with integrated boost converter. With an internal 40V switch FET, the AW9962E drives up a string of up to 10 LEDs in series. The boost converter runs at 1.1MHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components. The default white LED current is set with the external sense resistor R SET , and the feedback voltage is regulated to 200mV, as shown in the typical application. During the operation, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. AW9962E integrates built-in soft-start function to minimize the power supply  inrush current. AW9962E also integrates over-current protection , LED open protection and over temperature protection(OTP) to prevent chip from entering abnormal operating conditions.


l  Support 0.3% PWM dimming

l  PWM control input for CABC operation

l  1.1MHz Switching Frequency

l  38V Over-voltage Protection for up to 10 LEDs in Series

l  200mV Reference Voltage

l  2.7V to 5.5V Input Voltage Range

l  Over-current and Over-temperature Protection

l  Built-in Soft-start Limits Inrush Current

l  Ultra Small 2mm*2mm DFN-6L package


Application note

Product name Type Size Download
AW9962EDNR PDF 1.45M
  • Total Max Number
    Control Interface
    Min Duty(%)
    Flash Mode
    Switching Frequency (MHz)
    Package (mm)
Package form Number of pins Long(mm) Width(mm) Thick(mm) Pin spacing(mm) Heat sink Package drawing
DFN 2.0×2.0×0.75 -6L(A) 6 2.0 2.0 0.75 0.65 Y
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