3V Voltage Regulator with Shutdown Feature

[rsocor01]

Thanks mackrackit for your idea, but I really want to use this feature to shutdown the circuit if it hasn't been used for a certain amount of time. I want to use it like a "SLEEP" command. This regulator uses a current near zero (0.5 uA max) when in power saving mode, so that would make it ideal for battery operated applications.

Robert,

[rsocor01]

mackrackit,

I'm sure there has to be a way to control this shutdown pin with circuitry without holding a pushbutton. Thanks anyways for your idea.

Robert

[mackrackit]

I misunderstood,
you want the pic or some circuit to start the rgulator?
I was thinking you were just going to have the pic do the shut down.

[rsocor01]

mackrackit,

Well, yes I want the pic to do the shutdown.

[mackrackit]

mackrackit,

Well, yes I want the pic to do the shutdown.

OK then,the suggestion I made before was how to start it.

To have the PIC control it have a PIN with a pull down resistor that is connected to the enable pin of the regulator. Said PIN will always be HIGH until the program makes it low for what ever reason you code it for.

[rsocor01]

mackrackit,

Yeah, but I don't want to start the circuit with a pushbutton. I have already designed my circuit and it does not use a pushbutton to start it. It uses a slide switch and I want to keep it like that for some other design reasons. Anyways, I will keep your idea in mind for future projects.