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" To: "Microcontroller discussion list - Public." 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 > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist