Thank you for your answer. For some reason I had a tough time figuring that out. This list is great!

Thank You,

Michael Ewald

On Jul 28, 2010, at 11:35 AM, gumstix-users-request@lists.sourceforge.net wrote:

Message: 2
Date: Wed, 28 Jul 2010 11:24:24 -0700
From: Dave Hylands <dhylands@gmail.com>
Subject: Re: [Gumstix-users] Summit Board: VCC_3.3 Max Current / what
is it driven by?
To: "General mailing list for gumstix users."
<gumstix-users@lists.sourceforge.net>
Message-ID:
<AANLkTimvWOStQKF=_wW9kLcgkV7NUPDvbKwsHXESV3ry@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

HI Michael,

On Wed, Jul 28, 2010 at 6:43 AM, Michael Ewald <michael.ewald@mac.com> wrote:
List,

I'm looking to power my GPS from VCC_3.3 pin on the Summit board. It is located in the 40 pin header. I'm confused as to what would drive the VCC_3.3 pin, is it the COM or the Summit? How many mA can I draw before things go very bad? My application will never exceed 200 mA but I think typical usage will be around 110 mA.

Is the 5V 50 mA Regulator driving it, the TPS62111, or the COM?
<http://www.gumstix.com/store/catalog/product_info.php?products_id=215&show_tab=details>

Looking at the schematics, the VCC_3.3 comes from the TPS62111.

I would imagine that you should be able to draw 200mA without any
issues. If you don't have wireless or bluetooth, then you'll
definitely be able to do it.

--
Dave Hylands
Shuswap, BC, Canada
http://www.DaveHylands.com/



------------------------------