Post by thread:[EE] 12V to 3.3V Simple Switcher Module

Hi, I have a friend who needs 12 little 12V to 3.3V 1 Amp switcher modules something along the line of the NSC Simple Switcher technology LM2575 type. The time to layout a small board and get them made is probably longer than just buying 12 modules like that. Does anyone know of a company that sells small postage stamp size modules that do this for under $20 or thereabouts Thanks John Dammeyer

There was a company selling small switchers for 5V a few years ago, but I can't remember the name. I think it can be googled using "switching supplies". --Bob Quoting John Dammeyer <spam_OUTjohndTakeThisOuTautoartisans.com>: {Quote hidden}> Hi, > > I have a friend who needs 12 little 12V to 3.3V 1 Amp switcher modules > something along the line of the NSC Simple Switcher technology LM2575 > type. The time to layout a small board and get them made is probably > longer than just buying 12 modules like that. > > Does anyone know of a company that sells small postage stamp size > modules that do this for under $20 or thereabouts > > Thanks > > John Dammeyer > > -

Newport ? RP On 08/05/07, .....engineerKILLspam@spam@neomailbox.com <engineerKILLspamneomailbox.com> wrote: {Quote hidden}> There was a company selling small switchers for 5V a few years ago, > but I can't remember the name. I think it can be googled using > "switching supplies". > > --Bob > > Quoting John Dammeyer <.....johndKILLspam.....autoartisans.com>: > > > Hi, > > > > I have a friend who needs 12 little 12V to 3.3V 1 Amp switcher modules > > something along the line of the NSC Simple Switcher technology LM2575 > > type. The time to layout a small board and get them made is probably > > longer than just buying 12 modules like that. > > > > Does anyone know of a company that sells small postage stamp size > > modules that do this for under $20 or thereabouts > > > > Thanks > > > > John Dammeyer > > > > --

On May 7, 2007, at 12:23 PM, John Dammeyer wrote: > I have a friend who needs 12 little 12V to 3.3V 1 Amp switcher modules Like these: www.dimensionengineering.com/DE-SW033.htm http://rocky.digikey.com/WebLib/Texas%20Instruments/Web%20data/ PT5100%20Series.pdf

That's perfect! Thanks. I'll pass it on. John > On May 7, 2007, at 12:23 PM, John Dammeyer wrote: > > > I have a friend who needs 12 little 12V to 3.3V 1 Amp > switcher modules > > Like these: > www.dimensionengineering.com/DE-SW033.htm > > rocky.digikey.com/WebLib/Texas%20Instruments/Web%20data/PT5100%20 Series.pdf > --

Hi John, I just bought a few dc/dc converters from Recom that can be used instead of the normal LM7805, they also do a 3.3V version. I got them from RS part numbers 532-8050 for the 5V and 532-8044 for the 3.3V one. This is the link for their site: http://www.recom-international.com/ They have other types that may suit you. Best regards Luis {Original Message removed}

> I have a friend who needs 12 little 12V to 3.3V 1 Amp switcher modules > something along the line of the NSC Simple Switcher technology LM2575 > type. The time to layout a small board and get them made is probably > longer than just buying 12 modules like that. > > Does anyone know of a company that sells small postage stamp size > modules that do this for under $20 or thereabouts I've used Nationals WEBENCH online design tools to design a Simple Switcher power supply and order a kit of parts including a PCB. Not a bad way to go for prototypes and small quantities. -- Brent Brown, Electronic Design Solutions 16 English Street, St Andrews, Hamilton 3200, New Zealand Ph: +64 7 849 0069 Fax: +64 7 849 0071 Cell: 027 433 4069 eMail: EraseMEbrent.brownspam_OUTTakeThisOuTclear.net.nz