[定位器]晶艺LA1823,4.5V~100V, 3.5A,替换MP9487,MP9486A,启烨科技Features 4.5V to 100V Wide Input Range 3.5A Typical Peak Current Limit Integrated 500mΩ low resistance high side power MOS. Constant On Time Control with Constant Switching Frequency. 180μA Low Quiescent Current 150kHz/240kHz/420kHz Switching