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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 產品規格
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ItemsSpec.Content
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01No. of Output Channel64
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02Output Current per Channel5~30mA
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03Sustaining Output Voltage17V
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04Excellent Output Current Accuracy-between channels<±3.0％ (max.)
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05Excellent Output Current Accuracy-between ICs<±3.0％ (max.)
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06Embedded MOSFET
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07Transmission InterfaceSPI with Daisy Chain
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08Transmission MethodBurst Mode
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09Scan DesignUp to 8-scan
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10Error Detection - LED Open
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11Error Detection - LED Short
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12Current Gain8-bit
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13Dimming Method12-bit PWM
10-bit PAM -
14Dynamic-Sync
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15Feedback Control
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16Protection-OTP
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17RoHS Compliant PackageBGA 5X11
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18Major ApplicationsLaptop, Tablet
