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LED Display


MY9262

16-Channel LED Driver With 16bits grayscale Adaptive Pulse Density Modulation & Power Saving Control
General Description

*The MY9262, 16-channel constant current LED driver with 16bits grayscale Adaptive Pulse Density Modulation (APDM) and power saving control, supports high quality LED video display applications. This distinctive APDM technology abates the non-ideal IOUT distortion due to non-symmetric transient responses and enhances the refresh rate by separating efficiently the frame waveform.

The MY9262 features a fast 30MHz DCK input, allowing a wide LED dimming (on/off) range to be implemented. This 4-wire serial interface allows a microcontroller to configure the output channels using four inputs (DI, DCK, LAT, and GCK) and a data output (DO). DO allows multiple drivers to be cascaded and operated together.

The device operates over a 3V to 5.5V input voltage range and provides 16 open-drain constant current sinking outputs that are rated to 17V and delivers up to 45mA 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 global current control. Furthermore, the MY9262 also supports the grayscale synchronization by two functions of counter reset and data synchronization. And the sleep mode could efficiently lower down the supply current in power saving applications.

The MY9262 is available in a 24-pin SOP/SSOP/TSSOP/ QFN package and specified over the -40°C to +85°C ambient temperature range.



keyword:16-Channel constant current LED Driver with 16bits PWM grayscales adjustment & Power Saving Control,MY9262, LED Video Display,MY-Semi Inc.


Applications
  • Indoor and Outdoor LED Video Displays
  • Variable Message Sign (VMS)
  • Dot Matrix Module
  • LCD Display Backlighting
  • Typical Operating Circuits 

        MY9262 Operating  Circuits.jpg

    Features
  • 3V ~ 5.5V Operating supply voltage
  • 2~55mA/5V Constant current output range
  • 2~35mA/3.3V Constant current output range
  • 17V Rated output channels for long LED strings
  • ±1.5% (typ.) LED Current accuracy between channels
  • ±3% (typ.) LED Current accuracy between chips
  • 16bits grayscale resolution with Adaptive Pulse Density Modulation control [ patent pending ]
  • Traditional non-scramble waveform for high power LED applications
  • Grayscale counter reset selection
  • Grayscale data synchronization selection
  • 6bits global current control:from 12.5% to 200%
  • Sleep mode to lower down the supply current to 0.1uA
  • 30MHz Clock frequency for data transfer
  • 30ns fast current transient response
  • Current setting by one external resistor
  • Schmitt trigger input
  • Power on reset
  • -40°C to +85°C Ambient temperature range
  • Order Information
    PART PACKAGE INFORMATION
    MY9262SA
    SOP24-236mil-1.0mm
    2000 pcs/Reel
    MY9262SS
    SSOP24-150mil-0.635mm
    2500 pcs/Reel
    MY9262TE
    TSSOP24-173mil-0.65mm
    2500 pcs/Reel
    MY9262QF
    QFN24-4mmx4mm-0.5mm
    3000 pcs/Reel

     

    Pin Configuration

      9262 Pin.jpg

     

     


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    Telephone: 886 (3) 560-1668    Fax: 886 (3) 560-1600   Mail address: info@my-semi.com.tw

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