| 摘要 |
An embodiment of a voltage regulator includes a pass device, a feedback circuit, and an operational amplifier (opamp). A first current conducting terminal of the opamp is coupled to an input voltage node, and a second current conducting terminal of the opamp is coupled to a regulated voltage node. The feedback circuit is coupled between the regulated voltage node and the feedback node, and the feedback circuit is a floating voltage reference configured to produce a feedback signal. The opamp has an input coupled to a feedback node, and an output coupled to a control terminal of the pass device. The opamp provides a signal to the control terminal based on the feedback signal from the feedback node. The control signal causes a current through the pass device to vary to maintain a voltage at the regulated voltage node at a target regulated voltage. |
