> A lot of the time they get "lazy" and don't implement PEC.  The supply I =
worked with
> didn't require it.
>=20
> The data sheet should say what's expected.  I tried to find LT2979, but t=
here are no
> matches, not even on Linear's site.  And you didn't say what it did, so I=
 couldn't
> find it by guessing and working backwards.

I suspect he means this chip ...
http://www.linear.com/product/LTC2978

found by going through the parametric search under "digital power managemen=
t" ...


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