Sat May 17 20:58:55 EDT 2014

Low side charge?

Problem though: EIDAC only has a sinking current source due to GND
level reference.  The NMOS can't properly discharge a high-side cap.
Does this need a current mirror?  Rather not as it adds another source
of current mismatch.

PMOS equivalent? See [1].

TP0610    SOT-23
ZVP3306   TH, $1
ZVP2106A  TH, $1
BSS84     SOT-23
DMG1013   SOT-23, $0.03

(DMG1012 N)

[1] https://groups.google.com/forum/#!topic/sci.electronics.design/og2iI9I1IzM