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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
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ItemsSpec.Content
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01Scan TypeScan-sharing
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02No. of Output Channel12
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03Output Current per Channel5~40mA
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04Sustaining Output Voltage7V
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05Excellent Output Current Accuracy-between channels<±1.5％ (typ.)
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06Excellent Output Current Accuracy-between ICs<±2.5％ (typ.)
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07Embedded MOSFET4
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08Supply Voltage5V
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09Control InterfaceSPI 15MHz
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10Scan DesignUp to 20-scan
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11LED Matrix ConfigurationUp to 400 RGB pixels
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12Error Detection - LED Open
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13Error Detection - LED Short
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14Error Detection - LED Pixel Short
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15Current Gain8-bit
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16Intelligent Power Saving
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17PWM10-/8-bit
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18I/O Level3.3V / 5V selectable
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19Ghosting Effect Elimination
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20EMI Noise ReductionChannel output Shift, PWM Forward/Backward Counting, Output Slew Rate Control, PWM Enhancement
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21Auto Breath Lighting Function
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22Protection - Thermal Shutdown
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23Protection - OCP
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24RoHS Compliant PackageTSSOP28
QFN28 -
25Major ApplicationsLED Lighting for gaming keyboard, home appliance, loT device, MIDI controller
