Patent ID: 6515461
Filing Date: 2003-02-04
Classification: G05F

Abstract:
A voltage downconverter circuit for receiving a supply potential and lowering the potential to generate a downconverted potential, comprising:a differential amplifier circuit comparing a potential corresponding to a first reference potential with a potential corresponding to said downconverted potential to generate a control signal according to a result of the comparison, said differential amplifier circuit including a constant current source transistor receiving at its gate a second reference potential supplied through a path different from that for supplying said first reference potential for controlling an operation current value of said differential amplifier circuit; a downconverted potential output node for outputting said downconverted potential; and a drive transistor provided between said downconverted potential output node and said supply potential to change conductance between said downconverted potential output node and said supply potential according to said control signal.