亚洲码国产精品高潮在线,蜜臀av国内精品久久久,av综合区,av免费电影网,久久刺激视频 自拍偷自拍亚洲精品牛影院_与丰满少妇做爽视频_精品精品国产高清A级毛片_在线观看老湿视频福利

The MP4000 is a high efficiency step-down converter designed for driving high brightness LED. The MP4000 drives an external MOSFET in the floating buck converter structure. The inductor current is regulated with boundary conduction mode which features no reverse recovery loss in the freewheeling diode and soft turn on for the power MOSFET. Such operation mode can achieve very high efficiency and at the same time minimize the inductor value and size. Also,the LED current can be well regulated by controlling the MOSFET peak current, which is sensed through an external resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency.