VOLTAGE DOWN CONVERSION CIRCUIT CAPABLE OF COMPARING A REFERENCE VOLTAGE WITH A FEEDBACK VOLTAGE AND OUTPUTTING THE COMPARISON RESULT AS AN OUTPUT VOLTAGE ACCORDING TO THE VOLTAGE LEVEL

摘要

PURPOSE: A voltage down conversion circuit is provided to stably control an output voltage by converting the output of an analog amplifier to a digital value and controlling the output with the converted digital value.;CONSTITUTION: An output control part(110) compares a reference voltage with a feedback voltage which is supplied by feeding back an output voltage. The output control part changes the voltage level of a first node. A drive part(120) outputs a second control signal which has a pulled-up or pulled-down voltage level according to the voltage level of the first node. An output part(130) outputs an input voltage as an output voltage according to the second control signal. A disable part(140) disables the operation of the output control part according to a disable signal.;COPYRIGHT KIPO 2010