Hi,

I need to regulate 24V down to 3.3V 100-200mA without spending lots of $$$$$...and Amps.

Of course to make things less fun is that the input voltage will drop maybe as low as 10-12V and we don't want to use something similar to LM7805 since they just waste too much power, so I am looking for something with a decent efficiency. Since many many many of these regulators will be connected to the same 24V powerline it is good if the regulator itself doesn't have a high power consumption.

So does anyone have any favorite chip or trick they want to share I would be very grateful.

It is not hard to buy one from national for 5 USD but there has to be other ways to do it.

/me