On Sunday 29 May 2005 09:53 pm, Russell McMahon scribbled:
> ...  The
> LM2578/LM3578 is cheaper (about $US0.50) but not in DIP.

Where did you find these for $0.50?  I was looking at these National parts 
recently, and Digikey has the LM3578AM for US$0.80/1k.  Would really 
appreciate a lower-cost source.

I believe the MC33063/MC34063 can do what you want, and is much lower-cost at 
~US$0.28/1000. 

BTW, aren't you on the other side of the planet?  Curious why you check 
pricing at Digikey -- do you buy from here and have them ship to you, or does 
Digikey have a branch over yonder?

Cheers,
-Neil.



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