| 摘要 |
A low drop-out DC voltage regulator comprising an output pass element for controlling an output voltage (v) of power supplied from a power supply through the output pass element to a load (R), a source of a reference voltage (v), and a feedback loop for providing to the output pass element a control signal tending to correct error in the output voltage. The feedback loop includes a differential module responsive to relative values of the output voltage (v) and the reference voltage (v) and an intermediate module driven by the differential module for providing the control signal. The differential module presents the widest bandwidth of the modules of the regulator and the differential module presents a frequency pole that is higher than the cut-off frequency of the regulator, at which its regulation gain becomes less than one.
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