PT4107是一款适用于极宽交流和直流电压输入范围的高光LED驱动控制器。
        PT4107针对高功率LED照明,输入电压既可为传统的110V/220V交流电压又可为18V以上到数百伏直流电压的PWM恒流控制器。它以独特的电路结构,采用峰值电流检测为大功率LED提供恒定的供电电流。另外,PT4107还为使用者提供良好的调光措施(SW1：5K的可调电位器),并为系统提供了安全可靠的过流过温保护,提高了整个系统的可靠性。整体供电效率可达80％以上,每个PT4107可以驱动30串多并的LED组合,达到了高效低成本的驱动要求。是建筑物外观照明、景观照明 、标识与指示性照明、室内空间展示照明 、娱乐场所及舞台照明等LED照明的选择。

特点Features:
﹡>90% efficiency
﹡Wide input range from 18V to 450V
﹡Suitable for constant-current LED driver
﹡Applications from a few mA to more than 1A Output
﹡LED string from one to hundreds of diodes
﹡PWM Low-Frequency Dimming via Enable pin
﹡Linear Dimming via LD pin
﹡Frequency jittering for better EMI performance
﹡Programmable Over temp Protection (OTP)
应用Applications:
﹡DC/DC or AC/DC LED Driver applications
﹡RGB Backlighting LED Driver
﹡General purpose constant current source
﹡Signage and Decorative LED lighting
﹡Automotive Chargers