This website stores cookies on your computer. These cookies are used to collect information about how you interact with our website and allow us to remember you. We use this information in order to improve and customize your browsing experience and for analytics and metrics about our visitors both on this website and other media. To find out more about the cookies we use, see our Cookie Statement. If you decline, your information won’t be tracked when you visit this website. A single cookie will be used in your browser to remember your preference not to be tracked. Find out more here.
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
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电流增、减过程平滑顺畅
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
订阅接收最新产品讯息 (请先登入)
.
Please check your email box and click validation url.