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MBI5262 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with selectable 16/15/14/13-bit color depth. MBI5262 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 1:16 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, MBI5262 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. In addition, the innovative GCLK multiplier technique doubles visual refresh rate.
MBI5262 drives the corresponding LEDs to the brightness specified by image data. With MBI5262, all output channels can be built with 14-bit color depth. When building a 14-bit color depth video, S-PWM technology reduces the flickers and improves the image fidelity.
Through compulsory error detection, MBI5262 detects individual LED for open-circuit errors without extra components. MBI5262 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.
MBI5262 产品规格
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ItemsSpec.Content
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01可支持LED型态共阳极
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02扫描驱动传统
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03输出通道数16
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04每通道输出电流值4~60mA
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05输出管脚耐压7V
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06输出电流精确度-通道间<±2.5％ (typ.)
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07输出电流精确度-IC间<±3.0％ (typ.)
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08内建 MOSFET
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09扫描设计最高16扫
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10PLL
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11错误侦测-LED开路
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12错误侦测-LED短路
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13电流增益6-bit
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14PWM增强
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15GCLK倍频
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16智能节电
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17S-PWM13/14/15/16-bit
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18鬼影消除
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19高对比度干扰消除
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20白平衡色偏消除
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21IC为单位区块不均消除
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22第一行扫偏暗消除
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23渐层暗线消除
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24LED坏点隔离
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25RoHS环保封装SSOP24
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26主要应用LED扫描屏
