A8509 宽输入电压范围、高效率、4 通道 WLED 驱动器的典型应用。 A8509 是一款用于 LCD 面板背光的多输出白光 LED 驱动器。它集成了一个电流模式升压
控制器和四个独立的电流吸收器。升压控制器架构允许显着缩放升压电压,以优化每串所需 LED 数量的解决方案。 FSET/SYNC 引脚可以设置所需的升压开关频率或同步 300 至 800 kHz 范围内的值
说明
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Typical Application for A8509 Wide Input Voltage Range, High Efficiency, 4-Ch WLED Driver. The A8509 is a multi-output white LED driver for backlighting LCD panels. It integrates a current-mode boost controller and four individual current sinks. The boost controller architecture allows for significant scaling of boost voltage to optimize the solution for the required number of LEDs per string. The FSET/SYNC pin either sets the required boost switching frequency or synchronizes the value in the range of 300 to 800 kHz