A linear voltage regulator includes a first transistor, a feedback
circuit, and a control circuit. The first transistor includes a first
terminal coupled to an input terminal of the regulator, a second terminal
coupled to an output terminal of the regulator, and a control terminal.
The first transistor is configured to provide a load current to the
output terminal at a desired voltage level based on a control signal on
the control terminal. The feedback circuit is coupled to the output
terminal and is configured to generate a feedback signal based on an
actual voltage level at the output terminal. The control circuit is
configured to provide, based on the feedback signal, the control signal
at a level to substantially maintain an output voltage at the output
terminal at the desired voltage level. An operating current of the
control circuit is configured to increase, by a limited amount,
responsive to a transient increase in the load current.