Post by thread:Low power 3V supply

mestra@u-netsys.com.br (Engenharia Mestra de Sistemas Sociedade Ltda) wrote: > What do you think would be the best way to design a very low power 3V supply > ? I need something that will provide some miliamps to my PIC circuit but > won't steal more than some microamps... If you figure it out, the world's electricity generating authorities will kill you. A perpetual motion machine springs to mind... I have in fact absolutely nothing useful to contribute on this question, other than weak humor. Actually, that's not quite true. Maxim have a range of switching regulators that might be worth looking at. I'm assuming you have either a higher supply voltage that you want to regulate down with efficiency (which the Maxim devices will do) or a low duty cycle (in which case a large capacitor might be important). HAve a look at http://www.maxim-ic.com/ Cheers, Clyde -- Clyde Smith-Stubbs | HI-TECH Software, | Voice: +61 7 3300 5011 spam_OUTclydeTakeThisOuThitech.com.au | P.O. Box 103, Alderley, | Fax: +61 7 3300 5246 http://www.hitech.com.au | QLD, 4051, AUSTRALIA. | BBS: +61 7 3300 5235 --------------------------------------------------------------------------- For info on the World's best C cross compilers for embedded systems, point your WWW browser at http://www.hitech.com.au, or email .....infoKILLspam@spam@hitech.com.au

>> What do you think would be the best way to design a very low power 3V supply >> ? I need something that will provide some miliamps to my PIC circuit but >> won't steal more than some microamps... > That's right, I meant efficiency, not the perpetual motion machine... Regards, Pedro Drummond.

---------- > From: Engenharia Mestra de Sistemas Sociedade Ltda > To: Multiple recipients of list PICLIST > Subject: Low power 3V supply > Date: Tuesday, August 06, 1996 2:29 AM > > Hi, fellow PICers. > > > What do you think would be the best way to design a very low power 3V supply > ? I need something that will provide some miliamps to my PIC circuit but > won't steal more than some microamps... > > TIA, > > > Pedro Drummond > > I selected an Analog Devices ADP3367 linear regular for a simular project which uses 4 AA alkaline batterys as power source Look at : http://www.analog.com/ For data sheets. Jimmie Curry Jim Curry and Associates 13339 N. Central Expy. Dallas, TX 75243 Voice: 214 680-1540 Fax: 214 680-1562 Email: jcurryKILLspamairmail.net Web Page: http://web2.airmail.net/jcurry/

>Pedro Drummond. wrote: > What do you think would be the best way to design a very low power 3V supply > ? I need something that will provide some miliamps to my PIC circuit but > won't steal more than some microamps... I always recommend the Seiko linear regulators. They make one that has 1.2 micro amp quiescent current! S812xx series. Hope this helps, Gary Skinner, Electronic Solutions Inc Design of custom control circuits Denver CO 303-469-9322