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The MBI5039 is a 16-channel constant current LED driver with smart error detection functions released by Macroblock. The MBI5039 supports constant output current from 3mA to 90mA and sustains up to 17V at the output ports. In addition, the high clock frequency (30MHz) satisfies the system requirements of high volume data transmission. The MBI5039 includes two error-detection functions: in-message error detection and silent error detection. The in-message error detection function performs online detection as data-in and error-out sequentially, making it easy to identify the LED open and short errors and report the exact position of the broken LED simultaneously. Moreover, the silent error detection features full LED panel detection to detect even dark pixels in real time, and moreover, the silent error detection can diagnose the LED at low current (0.1mA) within short period (500ns) to avoid flickers or noise on the LED panel, assuring the accuracy of the display information.