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The MBIA129 is a general-purpose matrix LED driver with a standard SPI interface. Each MBIA129 has 12 constant current driving channels and 8 time-multiplexed scan switches. The driver IC can be set up in cascading configuration to control the extended RGB matrix via addressed data transmission. MBIA129 is designed for full-color backlit applications, such as PC gaming devices, and consumer and white goods applications, and are able to be powered by USB or battery.
MBIA129 with an internal PWM clock features an 8-bit grayscale control for each LED, which can generate a color combination of up to 16.8 million colors per LED pixel. With 8-bit (256-step) group 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 to simplify application design. The output current can be set to use an external resistor for constant current adjustments.
MBIA129 features the de-ghost function, which eliminates the ghosting effect of LED matrix architecture. The device supports open/short error detections and has a power saving mode that lowers the power consumption of device operation and stand-by.
MBIA129 產品規格
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ItemsSpec.Content
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01No. of Output Channel12
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02Output Current per Channel5~40mA
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03Sustaining Output Voltage7V
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04Excellent Output Current Accuracy-between channels<±3.0％ (typ.)
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05Excellent Output Current Accuracy-between ICs<±6.0％ (typ.)
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06Embedded MOSFET8
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07Supply Voltage5V
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08Control InterfaceSPI 15MHz；I2C 3.4MHz
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09Scan DesignUp to 8-scan
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10LED Matrix ConfigurationUp to 32 RGB pixels
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11Error Detection - LED Open
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12Error Detection - LED Short
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13Error Detection-LED Pixel Short
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14Current Gain8-bit
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15Intelligent Power Saving
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16PWM8-bit
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17I/O Level3.3V / 5V selectable
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18Ghosting Effect Elimination
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19EMI Noise ReductionGroup output Shift、PWM Forward Counting
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20Auto Breath Lighting Function
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21Protection - Thermal Shutdown
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22Protection - OCP
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23RoHS Compliant PackageQFN40
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24Major ApplicationsLED Lighting for gaming keyboard, home appliance, loT device, MIDI controller
