A voltage regulating circuit for providing a regulated output voltage. The
voltage regulating circuit includes a voltage regulator, a converting
circuit, a capacitive device, a first current mirror module, and a second
current mirror module. The voltage regulator has a first output producing
the regulated output voltage and a second output producing a pass
voltage. The converting circuit converts the pass voltage into a first
current and a second current passing through a first converting node and
a second converting node respectively, where the first current
charges/discharges the capacitive device. The first current mirror module
has a first current mirror path coupled to the first converting node and
a second current mirror path coupled to the second converting node. The
second current mirror module has a first current mirror path coupled to
the second converting node and a second current mirror path coupled to
the first output.