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Constant Current Regulators ('diodes') are back

Started by -jg May 20, 2009
On Semi have released some low cost, constant current regulators that
target LED drive,
but have many more applications

http://www.onsemi.com/PowerSolutions/newsItem.do?article=2094

Starting at $0.0545/10K, these are not the usual 'niche price
nonsense' seen on other
current regulator 2 terminal devices 'diodes'.

Right now in 20/25/30mA, hopefully they can do 5/10/15mA too, soon...

-jg
On May 20, 9:06=A0am, -jg <Jim.Granvi...@gmail.com> wrote:
> On Semi have released some low cost, constant current regulators that > target LED drive, > but have many more applications > > http://www.onsemi.com/PowerSolutions/newsItem.do?article=3D2094 > > Starting at $0.0545/10K, these are not the usual 'niche price > nonsense' seen on other > current regulator 2 terminal devices 'diodes'. > > Right now in 20/25/30mA, hopefully they can do 5/10/15mA too, soon... > > -jg
Look good, most likely calibrated JFETS (looking at the min. voltage they need). I would also be looking forward to 5/10 mA range which could be handy for some instrumentation purposes (not very likely to appear unless needed for huge displays, though :-) ). Dimiter ------------------------------------------------------ Dimiter Popoff Transgalactic Instruments http://www.tgi-sci.com ------------------------------------------------------ http://www.flickr.com/photos/didi_tgi/sets/72157600228621276/
On May 21, 12:45=A0am, didi <d...@tgi-sci.com> wrote:
# Look good, most likely calibrated JFETS (looking at the min. voltage
# they need).
# I would also be looking forward to 5/10 mA range which could be
handy
# for  some instrumentation purposes (not very likely to appear unless
needed
# for  huge displays, though :-) ).

I asked OnSemi, and they have 5mA and 10mA variants on the road map.
With LED efficiency climbing, lower currents are a trend, and I could
also see applications that use 5mA as a base current (Zero EMI), and
then
Dims using a higher current unit as well

Only feature they lack is a reverse-battery blocking ability...
-jg