In the example given on this slide, the designer wishes to find the correct inductor for a continuous mode buck converter, changing an unregulated 12VDC source to 5VDC regulated. The max load current is 0.4A. Using the Inductor Selection Graph for 5.0V fixed applications, simply follow the 12V horizontal line until it intersects with the 0.4A vertical line. Customers can see this is within the 100 micro Henry region, and the inductor code is L20.