液晶屏偏置电源及背光源驱动器

RT4831A是供便携式设备使用的液晶屏偏置电源兼4通道WLED背光源驱动器，其WLED背光源驱动器可以最高29V电压驱动4个并联的WLED串，各串电流可用I²C接口和/或外部PWM输入进行控制以获得60μA~30mA的输出，其分辨率高达11位，可表现为指数或线性特性。供给液晶屏的偏置电源由一个Boost转换器、一个线性稳压器和一个实现极性反转的电荷泵提供正、负压输出，其负载能力可达150mA，输出电压可经I²C接口在±4V~±6.5V之间以50mV的级差进行设定。RT4831A的封装形式为WL-CSP-24B 1.84x2.68(BSC)。 • 系统►硬件使能引脚►I2C控制接口►过热保护\n• WLED背光源驱动器►输入电压范围：2.7V~5V►驱动多达4串并联连接的WLED串►输出电压最高29V►使用外部PWM输入和I2C接口进行亮度控制►11位分辨率的指数或线性亮度控制►可程控的过压保护►可程控的过流保护►自动工作频率：250kHz, 500kHz, 1MHz►WLED电流平滑增、减\n• 液晶屏偏置电源►输入电压范围：2.7V~5V►可程控正/负压输出范围：±4V~±6.5V，级差50mV►可程控Boost输出电压范围：4V~7.15V，级差50mV►负载能力：150mA►输出短路保护;

封装/外壳：24-UFBGA，WLCSP 包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带 描述：IC LED DRV LIN I2C WL-CSP-24 集成电路（IC） LED 驱动器

Electronic Ballast Controller

GENERAL DESCRIPTION The ML4831 is a complete solution for a dimmable, high power factor, high efficiency electronic ballast. Contained in the ML4831 are controllers for “boost” type power factor correction as well as for a dimming ballast. FEATURES ■ Complete Power Factor Correction and Dimming

Electronic Ballast Controller

GENERAL DESCRIPTION The ML4831 is a complete solution for a dimmable, high power factor, high efficiency electronic ballast. Contained in the ML4831 are controllers for “boost” type power factor correction as well as for a dimming ballast. FEATURES ■ Complete Power Factor Correction and Dimming

Multimedia Computer Audio Chip

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Multimedia Computer Audio Chip

文件：575.99 Kbytes Page：12 Pages

35-W Triple Output Isolated DC/DC Converter for Logic Applications

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