Hi Again

I have a few projects out in the field that are battery operated…. They all have a PP3 battery and a sleep function.

At the moment I am just using a 78l05 to drop the 9volts to the 5volts needed for the PIC… Am toying in the future of replacing with a LF (3.3v) version of PIC but at moment stuck with what I have.

A bigger drain on my battery than the PIC is the linear regulator…So am thinking of a replacement, at the moment this :-

http://www.ti.com/lit/ds/symlink/lm2936.pdf

Has anyone any better suggestions…. again open to other ideas before I go for broke .

Thank you for reading

Andy