国产粉嫩小泬在线观看泬-亚洲中文字幕无码乱线-色呦呦官网-国产色爽-偷窥村妇洗澡毛毛多-亚洲狠狠做深爱婷婷影院-国产精品1-国产精彩视频在线-无码精品人妻一区二区三区免费看-国产av老师丝袜美腿丝袜-久久99婷婷-成人性生生活性生交3-性xxxx狂欢老少配o-九九九久久久久-黄色免费网站在线看-亚洲综合色区另类小说-欧美a∨-av在线免费观看网址-岛国av在线免费观看-国产精品v片在线观看不卡

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.