Step Up PSU for LCD


Posted on Feb 6, 2014

To start old Optrex DMC50264N LCD module you need to get +24V LCD bias voltage Where to get it if you have only low voltage 3 5V As LCD module drains very low current, it is possible to build very small DC/DC converter. There are lots of chips designed for this. I used MC34063, as I already had few of them in some old trash boards. The schem


Step Up PSU for LCD
Click here to download the full size of the above Circuit.

atics are typical, used from datasheet. As the current is very low, it is possible to use very small SMD inductance. I didn`t find very small, so I used quite big- about 1cm tall




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