AVR-Chat

Steve - thank you for your info on these two.  What are some 
applications you've used these in?  I'm a newbie, just starting to 
learn, and I appreciate these hardware insights and experiences.  
Would you ever drive the 2804 directly from a uC output pin?  If you 
can discuss the use of the driver a bit, that would be great.  What 
do/would you say to the boss that says "we can't afford that extra 
part"?  Thanks for any further insight you can add to your already 
helpful post.  Info on things that work well for others, especially 
low power/drain components that "do the job" well, are always useful.

Thanks !!

Charlie

--- In AVR-Chat@yahoogroups.com, "Steven Hodge" <stevehodge@...> 
wrote:
>
> I use IRF2804's to switch various current loads up to 50 A, using 
a Micrel
> 5014 (or 5015) driver.  The driver can be easily controlled with a 
signal
> directly from the uC.    The control threshold is about 2 V.   The 
2804's
> have a really low on-resistance, only 2 milli-ohms, and I don't 
use any heat
> sink at all up to 10 A or so.    At 50 A I use a modest heat sink, 
but have
> yet to even feel it get warm.   They are spec'd up to 75 A 
continuous.
> Pretty amazing little gizmos.
> 
>  
> 
> Steve