Yes, but the LM2676 (which I've also used) can handle more current, and=20
uses less and smaller supporting passives.  Net cost I expect will still=20
be higher, but no where near 10x.
The LM2676 is also a bit dated, so there are better options now.=20
Generally the higher the switching frequency, the smaller the passives,=20
and hence generally lower cost.

You should use the designer at webench.com .  Enter you in/out voltages=20
and current, and it will give you several circuit/part options.  You can=20
prioritize price or footprint size, and it will generate the circuit,=20
give you efficiency graphs, etc.  You can even swap in passives that you=20
have on hand and see how those perform.

Cheers,
-Neil.



On 12/31/2016 10:06 PM, IVP wrote:
> Thanks Neil,
>
> I'm looking through the brochure and will follow up
>
> http://www.ti.com/lit/sg/slyb196b/slyb196b.pdf
>
> Although I have to say that if I shop at Mouser something like the
> LM2676 is 10x the price of an MC34063
>
> Joe
>
>
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