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Macroblock MBI5264 Constant Current LED Driver for 1:64 Time-Multiplexing Applications (Shutter Fit) - Olympian LED

Macroblock MBI5264 Constant Current LED Driver for 1:64 Time-Multiplexing Applications (Shutter Fit)

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Description

The high quality visual performance of MBI5264 makes it ideal for LED displays on virtual production or green screen replacement in TV and film industry.

MBI5264 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with selectable 13-bit / 14-bit / 15-bit / 16-bit color depth. MBI5264 features a 16-bit shift register which converts serial input data into each pixel’s gray scale of the output port. Sixteen regulated current ports are designed to provide uniform and constant current sinks for driving LEDs with a wide range of VF variations. The output current can be preset through an external resistor. The innovative architecture with embedded SRAM is designed to support up to 1:64 time-multiplexing applications. Users only need to send the whole frame data once and to store in the embedded SRAM of the LED driver, instead of sending every time when the scan line is changed. It helps to save the data bandwidth and to achieve high grayscale with very low data clock rate. With scan-type Scrambled-PWM (S-PWM) technology, MBI5264 enhances PWM by scrambling the “on” time of each scan line into several “on” periods and sequentially drives each scan line for a short “on” period. The enhancement equivalently increases the visual refresh rate of scan-type LED displays.

MBI5264 drives the corresponding LEDs to the brightness specified by image data. With MBI5264, all output channels can be built with 16-bit color depth. When building a 16-bit color depth video, S-PWM technology reduces the flickers and improves the image fidelity.

Through compulsory error detection, MBI5264 detects individual LED for open-circuit errors without extra components. MBI5264 equipped an innovative cross elimination function, and it solves the cross phenomenon induced by failure LEDs. Besides, integrated ghost elimination and high contrast interference circuit eases the ghost problems and improve image contrast.

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