- on Power Supplies
- Published in issue 7/2005 on page 0
Negative-Output Switching Regulator
The circuit uses the familiar LM2575 step-down regulator from National Semiconductor. This circuit converts a positive-voltage step-down regulator into a negative-voltage step-up regulator. It converts an input voltage between –5 V and –12 V into a regulated –12-V output voltage.