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MBIA045 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with selectable 16/10-bit color depth which features a 16/10-bit shift register which converts serial input data into each pixel gray scale of output port. The output current can be preset through an external resistor. Moreover, the preset current of MBIA045 can be further programmed to 64 gain steps for LED global brightness adjustment.
With Scrambled-PWM (S-PWM) technology, MBIA045 enhances Pulse Width Modulation by scrambling the “on” time into several “on” periods. The enhancement equivalently increases the visual refresh rate. When building a 16-bit color depth video, S-PWM reduces the flickers and improves the fidelity. MBIA045 offloads the signal timing generation of the host controller which just needs to feed data into drivers. MBIA045 drives the corresponding LEDs to the brightness specified by image data. With MBIA045, all output channels can be built with up to 16-bit color depth (65,536 gray scales). Each LED’s brightness can be calibrated enough from minimum to maximum brightness with compensated gamma correction or LED deviation information inside the 16-bit image data. For time-multiplexing LED displays, MBIA045 featured pre-charge to eliminate the lower-ghosting effect induced by parasitic capacitance of the board. Output shift and selectable counting direction reduce power turbulence during operation of LED driver.
MBIA045 产品规格
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ItemsSpec.Content
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01扫描驱动静态
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02输出通道数16
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03每通道输出电流值1~45mA
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04输出管脚耐压17V
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05输出电流精确度-通道间<±2.0％ (typ.)
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06输出电流精确度-IC间<±2.5％ (typ.)
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07内建 MOSFET
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08电源电压3.3V~5V
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09控制接口非典型SP-Like
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10扫描设计
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11LED矩阵结构
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12错误侦测-LED开路
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13错误侦测-LED短路
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14错误侦测-LED像素短路
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15电流增益6-bit
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16智能节电
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17PWM16/10-bit
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18I/O层级VDD
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19鬼影消除
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20EMI解决方案输出通道延迟、PWM正/反向计数
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21呼吸灯效
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22保护功能-过热
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23保护功能-过电流
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24RoHS环保封装SSOP24
QFN24 -
25主要应用电竞键盘、家用设备之LED灯效
