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MBI6334 is an advanced 64-channel high power constant current full array local dimming (FALD) backlighting LED driver for LCD panel applications. The innovative architecture with embedded switch control system is designed to support up to 1:8 time-multiplexing and control up to 512 LED dimming zones application using internal Pulse Width Modulation (PWM) control with selectable 12-bit color depth and independent current dimming control by Pulse Amplitude Modulation (PAM) with selectable 10-bit color depth (of each LED current sink) to significantly improve contrast ratio for HDR applications.
When MBI6334 displays a 12-bit color depth video, S-PWM technology easily reduces the flickers and improves the image fidelity and variable refresh rate technology clearly avoids image tearing and stuttering.
Both compulsory and real-time LED error open/short detection and protection are included during both start-up and normal operation. Besides, MBI6334 also provides DC/DC converter feedback control with IC cascaded, ghost elimination function and over temperature protection features. The brightness of each LED is controlled through SPI interface by the host controller.
MBI6334 产品规格
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ItemsSpec.Content
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01输出通道数64
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02每通道输出电流值5~30mA
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03输出管脚耐压17V
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04输出电流精确度-通道间<±3.0％ (max.)
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05输出电流精确度-IC间<±3.0％ (max.)
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06内建 MOSFET
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07传输界面SPI 、菊链
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08传输方法Burst 模式
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09扫描设计最高8扫
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10错误侦测-LED开路
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11错误侦测-LED短路
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12电流增益8-bit
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13调光方式12-bit PWM
10-bit PAM -
14回授控制
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15保护功能-过热
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16RoHS环保封装BGA 5X11
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17主要应用笔电、平板
