Hi,
I was wondering how people normally design a linear regulator in a battery powered situation. For most linear regulators, let's say this one regulates to 3V. If the input voltage is say 2.5V, the output of this regulator will also be 2.5V. Surely this is a common problem? I want a regulator that automatically shutsdown completely when the output falls out of regulation (i.e. battery is low, and not to over discharge the battery). What are such linear regulators called? And if a particular regulator does not have this feature, how can I roll my own onto a standard regulator?