Patent ID: 7336058

Claim:
A low dropout (LDO) voltage regulator providing a regulated output voltage across a load from an unregulated voltage source, the LDO voltage regulator comprising: a feedback path for providing a feedback voltage representing an output voltage at an output of the LDO voltage regulator; a first LDO module coupled to the feedback path, an output of the LDO voltage regulator and a reference voltage, the first LDO module generating a first current based on the feedback voltage and the reference voltage, the first LDO module having a first frequency response adapted to a first frequency range; and a second LDO module coupled to the feedback path, the output of the LDO voltage regulator and the reference voltage, the second LDO module generating a second current based on the feedback voltage and the reference voltage, the second LDO module having a second frequency response adapted to a second frequency range, a lower end of the second frequency range higher than a lower end of the first frequency range, the first current and the second current combined and provided to the load to generate the output voltage at the output of the LDO voltage regulator.