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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