Return to the Products Page
  homesearchagentssupportask xilinxmap

Generating 3.3V from 5V

Sparty's Favorite Recipes 011 Kiss Your ASIC Good-bye!

Ingredients:

  • Low Drop Out Regulator
  • Instructions

    To generate 3.3V from a 5V supply, use a Low Drop Out regulator designed for this purpose, such as the Maxim MAX604 (0.5A reg) or the Linear Technology LT1086 (1.5A reg). If you are more adventurous, the Maxim MAX767 and MAX710 switching regulators can be significantly more efficient. If you have lots of stuff at 3.3V, use the integrated switching regulators from PowerTrends.

    The LM317 is NOT a good choice for 3.3V from 5V, as its nominal dropout voltage is 2V (at 25 deg-C, Load=1A). In fact, its dropout voltage is quite complex, over temperature, and load, and can be as high as 2.5V.

     

    Related Information