A quick one, guys.
Does anyone know what happens to the O/P when the On/Off pin is pulled Hi?
Does the O/P drop to 0v some other value or does it go HiZ?
I would guess the buck reg would go to 0v, though I believe some boost regs just turn off the switcher and leave the I/P voltage passing through.
TIA
Fof
To quote the PDF data sheet:
Allows the switching regulator circuit to be shut down using logic signals thus dropping the
total input supply current to approximately 80 μA. Pulling this pin below a threshold voltage
of approximately 1.3 V turns the regulator on, and pulling this pin above 1.3 V (up to a
maximum of 25 V) shuts the regulator down. If this shutdown feature is not required, the
ON/OFF pin can be wired to the ground pin or it can be left open. In either case, the
regulator will be in the ON condition.
Paul