The MAX1615 is a linear regulator that can operate from a supply range between 4 V and 28 V. It is tiny
and is capable of supplying 30 mA of output current at either 3.3 V or 5 V. 30 mA is not much current, but
for very small (battery-powered) applications, it may be sufficient. The MAX1615 has a shutdown input,
allowing an external system to power it down. One use for this regulator could be as a power source to
subsystems within an embedded computer, allowing the host processor to turn them off when not in use.
Before turning off a subsystem, ensure that its "absence" won't adversely affect the functionality of the rest
of the system.