Patent ID: 9134740
Filing Date: 2015-09-15
Classification: G05F,H03F

Abstract:
1. A regulator, comprising: a first transistor of a first conductivity type with a first control electrode, the first transistor configured to convert an input voltage into an output voltage, and output the output voltage lower than the input voltage; a first bias circuit configured to generate a first bias voltage lower than a reference voltage; a second bias circuit configured to generate a second bias voltage lower than a feedback voltage relating to the output voltage; a differential circuit configured to output a comparison signal as a control signal to the first control electrode in accordance with a difference between the reference voltage and the output voltage, the differential circuit including a second transistor of a second conductivity type with a second control electrode, the reference voltage being inputted into the second control electrode, a third transistor of the second conductivity type with a third control electrode, the third transistor and the second transistor being a pair of differential transistors, the feedback voltage being inputted into the third control electrode, a fourth transistor of the first conductivity type with a fourth control electrode, the fourth transistor being complementarily connected to the second transistor, the second bias voltage being inputted into the fourth control electrode, and a fifth transistor of the first conductivity type with a fifth control electrode, the fifth transistor being complementarily connected to the third transistor, the first bias voltage being inputted into the fifth control electrode; and a current mirror circuit connected to the second and third transistors.