Re: A3977 Microstepping Driver PCB Update

At 07:42 PM 9/6/2002 -0000, Tom wrote:

>Well, I'm just about ready to order my first small batch of printed
>circuit boards for Allegro's new A3977 chip, but I'd like some
>feedback from you folks. (almost) current info is posted on my

I'm not a EE (I don't even play one on TV), but doesn't the package for
the A3977 want a big fat trace on the board underneath it for a heatsink?
"Exposed thermal pad" jumps out at me from the datasheet.

Looks like a really neat board.

Best regards,

Randy

Randy Gordon-Gilmore ,----.___________ ______________ _________________
ProtoTrains // = = === == || == == == = || == == == = == =|
Rio Vista, CA, USA /-O==O------------o==o------------o==o-----------o==o-'
zephyrus@... http://www.prototrains.com