Patent ID: RE41926

Claim:
An output circuit for adjusting output voltage slew rate, comprising: a control circuit, for receiving an input data and generating a first control signal based on the input data; an output control device consisting of a first transistor connected in scries with a second transistor and a connection is an output end for generating an output signal; a first capacitor device having a first end and a second end, the first end is connected to a first working voltage and generates a first control voltage by charging/discharging on the second end to control a gate of the first transistor; a first switch for controlling charging/discharging of the first capacitor device based on the first control signal; a first current source for providing charging current for the first capacitor device; a second capacitor device having a first end and a second end, the second end is connected to a second working voltage and generates a second control voltage by charging/discharging on the first end to control a gate of the second transistor; a second switch for controlling charging/discharging of the second capacitor device based on the first control signal; and a second current source providing charging current for the second capacitor device.