SM72485 Datasheet | National Semiconductor

SM72485 SolarMagic 100V, 150 mA Constant On-Time Buck Switching Regulator May 10, 2011 SM72485 SolarMagic 100V, 150 mA Constant On-Time Buck Switching Regulator General Description The SM72485 Step Down Switching Regulator Features all of the functions needed to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100 V N-Channel Buck Switch. The device is easy to implement and is provided in the MSOP-8 and the thermally enhanced LLP-8 package. The regulator is based on a control scheme using an ON time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop...