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Review 16-Channel High Accuracy Constant Current LED Driver With 16bits Multiplex-PDM Control for Dynamic S

16-Channel High Accuracy Constant Current LED Driver With 16bits Multiplex-PDM Control for Dynamic S

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The MY9366, 16-channel constant current LED driver with 16bits grayscale M-PDM (Multiplex Pulse Density Modulation) control, supports any dynamic applications from 1/2 scan to 1/16 scan.
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Beschreibung

The MY9366, 16-channel constant current LED driver with 16bits grayscale M-PDM (Multiplex Pulse Density Modulation) control, supports any dynamic applications from 1/2 scan to 1/16 scan. The distinctive M-PDM technology enhances the refresh rate of dynamic scanning systems without increasing the frequency of grayscale clock in order to prevent from EMI interference. And the technique of automatic black frame insertion could abate efficiently the influence of blurs caused by the scanning switch.

The device operates over a 3.3V to 5V input voltage range (±10%) and provides 16 open-drain constant current sinking outputs that are rated to 15V and delivers up to 30mA of high accuracy current to each string of LED. The current at each output is programmable by means of an external current-sensing resistor and could be adjusted by 6bits linear global current control. By this advanced M-PDM approach, the frame refresh rate could be improved up to 6000Hz in dynamic 1/16 scanning systems and 12000Hz in dynamic 1/8 scanning systems when the grayscale resolution is 15bits / 16bits and the grayscale clock is 16MHz.

The MY9366’s on-board pass elements minimize the need for external components, while at the same time, providing ±3.5%(max.) LED current accuracy. Additional features include a ±0.1% regulated output current capability and fast output transient response.

The MY9366 is available in a 24-pin SSOP/QFN package and specified over the -40°C to +85°C ambient temperature range.

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Vertrieb Josef Röger