Patent ID: 7023181

Claim:
A constant voltage generator for outputting constant voltage from an output terminal, comprising: a band gap reference circuit which is connected to the output terminal and generates constant voltage; a current supply circuit which is connected to the output terminal and supplies current thereto; a starting circuit for controlling said current that flows through the current supply circuit during and after startup; and a voltage-current conversion circuit for converting the fluctuation of voltage of the output terminal to the fluctuation of current, wherein said starting circuit further comprises a first and second load elements, a first transistor which is connected to the first load element, a second transistor of which current capability is larger than the first transistor, and which shares the voltage of the control terminal with the first transistor, and is connected to the second load element, a first resistor which is connected to the first transistor, and a second resistor which is connected to the second transistor, and output of said voltage-current conversion circuit is input to the connection point between the second transistor and the second resistor, and the current at the connection point between the second load element and second transistor controls said current supply circuit.