Seconded.  I've had great results with several of the Simple Switcher=20
parts.  I've used thousands of the LM22674, after lots of success with=20
the older LM2674.
Recently though, I have been switching (pun!!!) over to another part --=20
TPS62173 (and TPS62172 for 3.3V) -- primarily due to the noticeably=20
smaller total circuit footprint and a bit lower cost.

Cheers,
-Neil.




On 12/31/2016 7:47 PM, IVP wrote:
> Hi Isaac,
>
> yes, the MC34063 is getting a bit creaky. Although it is versatile,
> and there is a high frequency version. Some topologies are quite
> a bit less efficient than others but that can be improved by using
> an external switch rather than the internal Darlington
>
> I've got a tube of DIP left over from a job a while back so I'm just
> using them up. For other projects - LEDs, single-cell boost etc - I've
> been trying Microchip and ST TSSOP ICs as they typically operate
> at > 500kHz and need only a small (10uH) inductor
>
> Made a note to look for the SimpleSwitcher range next time I do a
> Mouser order
>
> Thanks
>
> Joe
>
>
> -----
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