內置升壓IC可以實現2V to 5V 500mA
输入电流为5V*500mA/80%/2V= 1.56A, KB3302内置可以做到2A以上.
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/61/1326571201424914.jpg');}" onmousewheel="return imgzoom(this);">