Re: [Gumstix-users] Summit Board: VCC_3.3 Max Current / what is it driven by?

[Dave H. <dhy...@gm...>]

HI Michael,

On Wed, Jul 28, 2010 at 6:43 AM, Michael Ewald <mic...@ma...> 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/