| 摘要 |
A voltage generating circuit (311) includes : an output current generating circuit (301), generating an output current (Io), such that an output voltage (Vo) is generated at an output terminal (OT), according to an output voltage control signal (S_Vo); a comparing device, having a first input terminal (IN1) receiving a reference voltage, a second input terminal (IN2) receiving a feedback voltage (Vb), and an output terminal outputting the output voltage control signal (S_Vo) according to the reference voltage and the feedback voltage (Vb); an adjustable voltage dropping circuit (305), having a first terminal coupled to the second input terminal (IN2), and a second terminal coupled to the output terminal (OT); and a current source (307), for generating a predetermined current (Is) to the first terminal to generate the feedback voltage (Vb). The predetermined current (Is) flows through the adjustable voltage dropping circuit (305) to the output terminal (OT). |
