Hi Zik,

Roman Black (is he still here) has a low current 5v to 13.5v converter  here

http://www.romanblack.com/smps/conv.htm

It may be what you are after.

Justin

On 12/1/06, Zik Saleeba <zik@zikzak.net> wrote:
> Thanks everyone - sounds like a switcher is the way to go.
>
> Cheers,
> Zik
>
> On 12/1/06, Kenneth Lumia <klumia@adelphia.net> wrote:
> > Zik,
> >
> > Depending on the current requirements, you may want to
> > look at a boost switcher such as the LM2733Y.  It uses very
> > few external parts and is small (SOT-23-5).  I used it in a
> > 5v to 15V boost application and it works well.  You may
> > want to carefully look at the curves and equations before
> > using at 3.3v, especially concerning max load and efficiency.
> >
> > A voltage multiplier would probably have too many parts.
> >
> > If supply sequencing is not an issue and regulation is not critical,
> > you could also PWM a PIC output pin to provide the voltage.
> > This design is cheap if you have a free PWM pin and a few extra
> > cycles to burn.
> >
> > Ken
> > ____________________________
> > ".... Do vector calculus just for fun"
> > klumia@adelphia.net
> >
> >
> > ----- Original Message -----
> > From: "Zik Saleeba" <zik@zikzak.net>
> > To: "Microcontroller discussion list - Public." <piclist@mit.edu>
> > Sent: Thursday, November 30, 2006 1:55 AM
> > Subject: [EE] LCD power supply
> >
> >
> > > I'm working with an LCD display which requires a 15.3V - 19.3V LCD
> > > supply voltage. I have 3.3V available. Is the standard way of doing
> > > this to knock up a boost switcher or is there some more clever
> > > approach I haven't thought of? A voltage multiplier maybe?
> > >
> > > Thanks,
> > > Zik
> > > --
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