=20 > I resolved a similar problem by putting a resistor before the regulator. > This allows the resistor to dissipate most of the heat. You may need a capacitor between the resistor and regulator. > > Allen Unfortunately this is unlikely to help when dealing with a switching regulator. The switcher should dissipate far less then the resistor by its very nature. -- Bob Ammerman RAm Systems --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .