Since I was working with the ST1S10 for an upcoming project I decided to publish this little calculator. The ST1S10 is one of the cheapest if not the cheapest 3 A, 900 kHz, monolithic synchronous step-down regulator. The high frequency switching allows the use of tiny SMD components so the board space taken by this regulator its pretty tight. The calculator is written in OpenOffice Calc and saved as XLS, so you can open it with both MS Office and OpenOffice. The calculator works for Vout > 2.5V. You have to enter the requested values on brown boxes and you’ll get the result in the yellow boxes. If you notice any mistake in the formulas please let me know.
Download here: ST1S10 calculator