There are alot of LDO's that have a remote on/off capacity. Linear Tech, Micrel, National Semi, Vishay, ADI among others. Just check the websites for them. If this is a one time deal, National has a pretty good sample program. >From: Olin Lathrop >Reply-To: pic microcontroller discussion list >To: PICLIST@MITVMA.MIT.EDU >Subject: Re: On/off control for LM7805 regulator >Date: Wed, 5 Mar 2003 07:45:12 -0500 > > > I am powering a device using the LM7805 (5V regulator). I want to be > > able to turn the LM7805 on and off. The LM7805, as you know, doesn't > > have the on/off pin. Is there a way to do this? > >You could put a switching element in series with its input. A PNP >transistor or P channel FET would work well. > > >***************************************************************** >Embed Inc, embedded system specialists in Littleton Massachusetts >(978) 742-9014, http://www.embedinc.com > >-- >http://www.piclist.com hint: The PICList is archived three different >ways. See http://www.piclist.com/#archives for details. _________________________________________________________________ Add photos to your messages with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.