Quoting Bdale Garbee <bd...@gag.com>:
ARGH! Yes. Thank you for spotting that.
About 2.2 nC at our operating point.
I don't think it's necessary. But after talking to Keith, we'll add
the footprints. We've got the space and I've got to rework that part
of the board to fix the D/S swap anyway.
Yeah, that's a really low gate charge. I couldn't find the current
limit for the CC1111 GPIO pins, but you're probably right in that a
resistor may not be needed.
I hate to take the voltage drop hit on a 3.7 volt nominal battery system...
Agreed. In this type of application I would opt for a P-FET such as
the FDS6375, which keeps the voltage drop to the low millivolts or
less. In this case, you *would* want to swap the D and S connections
to that the body diode conducts only when the battery is right, and
even then only until the P-FET powers up. However if you can get it
done with just the connector, great! In my applications (off highway
industrial equipment), reverse battery connection is common, so I'm
always thinking about it.
Thanks for the feedback!
You're welcome! Let us know how it works out...
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