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'[OT] Samsung Parts (voltage regulators)'
2000\04\12@015122 by Dale Botkin

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On Wed, 12 Apr 2000, Russell McMahon wrote:

> Of particular interest to me was a TO92 regulator (KA76L05Z) with low
> dropout specs and max input voltage apparently similar to the LM2936 (which
> I use due to its very low quiescent current, very low dropout, higher than
> many max input voltage) and at a MUCH lower price from RS.

I just stumbled upon the ICL7663, programmable (2 resistors), low dropout,
<10uA quiescent current, logic controlled shutdown, and a tempo output
that looks like it could be used for generating LCD contrast voltage.
Works like a charm. Is there something else I should look at as well?
Typically I want to use either 4xAA or a 9V battery and have it last for
many months, so the 78L05 isn't a particularly good choice.  The 7663 cost
me a couple of bucks, but if there's something equivalent in performance
and cheaper or easier to get, I'd love to hear about it.

Dale
---
The most exciting phrase to hear in science, the one that heralds new
discoveries, is not "Eureka!" (I found it!) but "That's funny ..."
               -- Isaac Asimov

2000\04\12@102732 by mike

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On Wed, 12 Apr 2000 00:50:16 -0500, you wrote:

{Quote hidden}

Check out Motorola's 78LC and 78FC devices - about 1uA quiescent and
very cheap ($0.50).
Cheap low-dropout, low power regs are also available from Holtek,
Seiko, Ricoh and others.

2000\04\16@052058 by Russell McMahon

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Dale

7663 is a pretty good choice if you need the flexibility it offers.
An LM2836-Z5 in a TO92 3 pin package will give a 5 volt supply with similar
quiesecent current.
Depends on whether you want it to do more than this.

RM








{Quote hidden}

2000\04\16@220932 by Dale Botkin

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On Sun, 16 Apr 2000, Russell McMahon wrote:

> Dale
>
> 7663 is a pretty good choice if you need the flexibility it offers.
> An LM2836-Z5 in a TO92 3 pin package will give a 5 volt supply with similar
> quiesecent current.
> Depends on whether you want it to do more than this.
>
> RM
>

I searched extensively for information on LM2836 and found nothing
anywhere...  who makes it?

Dale
---
The most exciting phrase to hear in science, the one that heralds new
discoveries, is not "Eureka!" (I found it!) but "That's funny ..."
               -- Isaac Asimov

2000\04\16@221740 by l.allen

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> On Sun, 16 Apr 2000, Russell McMahon wrote:
>
> > Dale
> >
> > 7663 is a pretty good choice if you need the flexibility it offers.
> > An LM2836-Z5 in a TO92 3 pin package will give a 5 volt supply with similar
> > quiesecent current.
> > Depends on whether you want it to do more than this.
> >
> > RM
> >
>
> I searched extensively for information on LM2836 and found nothing
> anywhere...  who makes it?
>
> Dale
>
I suspect Russell means an LM2936-Z5 made by
Nat Semi (presently on my black list).


_____________________________

Lance Allen
Technical Officer
Uni of Auckland
Psych Dept
New Zealand

http://www.psych.auckland.ac.nz

_____________________________

2000\04\17@025553 by Russell McMahon

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>I searched extensively for information on LM2836 and found nothing
>anywhere...  who makes it?



Aaaagh - brain fade LM2936 !!!!!!!!!!!!

Nat Semi / National

I use them regularly.
They are several times the price of std 78L05 but very well worth the money
if you need their special abilities (and can stand the 50 mA max current)


RM








>
>Dale
>---
>The most exciting phrase to hear in science, the one that heralds new
>discoveries, is not "Eureka!" (I found it!) but "That's funny ..."
>                -- Isaac Asimov
>

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