| 摘要 |
Low dropout (LDO) regulators are described herein for providing regulated voltages for multiple voltage domains. In one embodiment, a voltage regulator comprises a plurality of pass transistors, each of the plurality of pass transistors being coupled between an input supply rail and a respective one of a plurality of regulator outputs. The voltage regulator also comprises a plurality of averaging resistors configured to average a plurality of feedback voltages to generate an average feedback voltage, wherein each of the plurality of feedback voltages provides voltage feedback for a respective one of the plurality of regulator outputs. The voltage regular further comprises an amplifier having a first input coupled to the average feedback voltage, and a second input coupled to a reference voltage, wherein the amplifier is configured to drive the plurality of pass transistors in a direction that reduces a difference between the reference voltage and the average feedback voltage. |
