Yep they look good, I also just noticed them recently, there's some good=20
appnotes and a excel spreadsheet for calculations for the MCP16321=20
anyway.  I've got the pcb proto for a design with it right here, next=20
week I'll find out how well it/my design works.  I expect success.

Nice to see mchip is getting into low-cost, well-documented,=20
easily-available analog type stuff.  That combination is hard to find.=20
Now if only they'd make a 3.3V rs485 transceiver ...

J


alan.b.pearce@stfc.ac.uk wrote:
> Just came across what appears to be a new family of microchip switching r=
egulators (least I hadn't noticed them before, but datasheet is (c) 2011). =
Both series are synchronous buck regulators with both FETS internal, so 3 c=
aps, 1 inductor and 1 to 3 resistors required. Both come in 3 x 3 QFN packa=
ge though.
>
> MCP16321/2 24V in, 1/2A out fixed (down to 0.9V, up to 5V) or variable ov=
er 0.9 to 5V.
> http://ww1.microchip.com/downloads/en/DeviceDoc/22285A.pdf
> around US$2.21 in ones.
>
> MCP16323 18V in 3A out fixed and adjustable versions, same voltage range =
as above.
> http://ww1.microchip.com/downloads/en/DeviceDoc/22284A.pdf
> around US$2.48 in ones.
>
>
>
>
>
--=20
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