MBIA128∣Amuse, RGB LED Driver IC∣Gaming Keyboard, Home Appliance, loT Device ∣ Macroblock



12X4 Row-Column Sharing Matrix LED Driver for Full-Color Backlight

The MBIA128 is a general purpose Row-Column Sharing Matrix LED Driver with standard SPI programming interface. Each MBIA128 has 12 constant current driving channels, and up to 4 time-multiplexed scans per IC. With Row-Column sharing the driver IC can be setup in parallel configuration to control up to 400 RGB pixels, or 1200 LEDs (5 ICs in parallel, total of 60 channels and 20 scans). MBIA128 is designed for full color backlit application, such as PC gaming devices, consumer and white goods applications.

MBIA128 with internal PWM clock features a 10-bit grayscale control for each LED, which can create color variation of up to 1.07 billion color per LED pixel. With 8-bit (256-step) Individual current gain, each group of R/G/B color LED can be controlled separately, giving flexibility for brightness adjustments. The driver IC has embedded MOS switches and internal resistor to simplify application design, while also supports the option to use external resistor for constant current adjustments.

MBIA128 has auto-breathe lighting control built-in to the driver IC. Designers can adjust the timing characteristics of output current to achieve various breathe lighting effects. MBIA128 also features de-ghost function, which eliminates the ghosting effect of LED matrix architecture. The device supports open / short, and pixel short detect, and has dynamic power saving feature that lowers power consumption during device operation.

MBIA128 Specification

  • Items
  • 01
    Scan Type
  • 02
    No. of Output Channel
  • 03
    Output Current per Channel
  • 04
    Sustaining Output Voltage
  • 05
    Excellent Output Current Accuracy-between channels
    <±1.5% (typ.)
  • 06
    Excellent Output Current Accuracy-between ICs
    <±2.5% (typ.)
  • 07
    Embedded MOSFET
  • 08
    Supply Voltage
  • 09
    Control Interface
    SPI 15MHz
  • 10
    Scan Design
    Up to 20-scan
  • 11
    LED Matrix Configuration
    Up to 400 RGB pixels
  • 12
    Error Detection - LED Open
  • 13
    Error Detection - LED Short
  • 14
    Error Detection - LED Pixel Short
  • 15
    Current Gain
  • 16
    Intelligent Power Saving
  • 17
  • 18
    I/O Level
    3.3V / 5V selectable
  • 19
    Ghosting Effect Elimination
  • 20
    EMI Noise Reduction
    Channel output Shift, PWM Forward/Backward Counting, Output Slew Rate Control, PWM Enhancement
  • 21
    Auto Breath Lighting Function
  • 22
    Protection - Thermal Shutdown
  • 23
    Protection - OCP
  • 24
    RoHS Compliant Package
  • 25
    Major Applications
    LED Lighting for gaming keyboard, home appliance, loT device, MIDI controller