Hello Lads,
Have a quick Q about the 1054 charge pump.
Having made a couple of 9>18vdc pumps that I guess resulted in a 50ma max pump,does anyone know what the maximum current available from the 1054 in "bi-polar supply doubler" guise?
I built a Geofx Adjusticator/Adjusticator mixer pair that I'm running on +ve only 18volt with an LM833,but have got some Burr Brown OPA2134's that I'm consodering running on +/-18vdc.
There isn't really any indication in the PDF what the maximum current is.
I'm not sure how to attach the pdf here.
Chris.....
Not sure exactly what you are doing, but if you are using two LT1054, one for the neg and one for the +, I would say (looking at he data sheet) you can get 50mA + and - out.
Hi Paul,
The manufacturer's pdf has an example to get a bi-polar doubled supply from a single +ve input.
I'm not sure how to upload the pdf here though.
Cheers for the reply
Chris.....
Linear Technology has some neato datasheets and application notes.
Well, the general rule is this:
if you double the voltage, then you can get a bit less than half the input current out.
So if it is 9v going in, and you get +-9 out, that's 50mA out (half the 100mA max input).
If there exists a single chip arrangement that is 9v in and + -18V out, that's going to be 25mA.