- on Power Supplies
- Published in issue 7/2005 on page 0
Micropower Voltage Regulator
This circuit was developed to power an AVR microcontroller from a 12 V lead-acid battery. The regulator itself draws only 14 ?A. Of course, there are dedicated ICs, for example from Linear Technology or Maxim, which can be used, but these can be very hard to get hold of and are frequently only available in SMD packages these days. These difficulties are simply and quickly avoided using this discrete circuit.