Patent ID: 6504424
Filing Date: 2003-01-07
Classification: G05F,H01L

Abstract:
In an integrated circuit, a voltage regulator implemented on a single semiconductor die, the voltage regulator comprising:a first depletion mode device (56)coupled to receive an input signal and coupled to provide a constant output signal substantially independent of the input signal; a first enhancement mode device (40)having a first conductor coupled to receive the constant output signal; a second depletion mode device (38)having a first conductor coupled to receive the input signal and a second conductor coupled to provide a regulated output signal substantially dependent upon a threshold potential of the first enhancement mode device; a first resistor coupled between the second conductor of the second depletion mode device and a control electrode of the first enhancement device, and having a first temperature coefficient of resistance; and a second resistor coupled between the control electrode and a second conductor of the first enhancement mode device and having a second temperature coefficient of resistance less positive than the first temperature coefficient of resistance.