Hi Josh,
Have you look at the allegro SLA7078MPR? $7.51 Newark qty 1 
http://www.newark.com/allegro-sanken/sla7078mpr/ic-motor-controller-zip-23pin/dp/87K4956?Ntt=SLA7078MPR
It works with unipolar motor only but it's very popular in stepper driver circuit.
Gaston


Josh Koffman wrote:
> On Sun, Dec 13, 2009 at 4:33 PM, PICdude <picdude3@narwani.org> wrote:
>   
>> Have you looked at the LM18245 -- I picked up some of these some time
>> ago, chosen because of their relatively higher current and voltage.
>> AFAIR it does bipolar and unipolar.
>>     
>
> Thanks for the suggestion. I don't think I'll need the higher current,
> but I had a look anyway. They seem to be the LMD18245 by the way. In
> any case, they seem alright, a bit pricey though. Plus they say
> they'll only do one phase, so you'd need two of them.
>
> Thanks for the suggestion though!
>
> Josh
>   

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