Patent ID: 6285569
Filing Date: 2001-09-04
Classification: H02M,Y10S

Abstract:
A regulator circuit, comprising:a first power supply terminal of the regulator circuit for receiving an operating voltage;a feedback terminal of the regulator circuit;a first transistor having a first conduction terminal coupled to the first power supply terminal, a second conduction terminal coupled to the feedback terminal, and a control terminal coupled for receiving a feedback signal;a Vcc limiter coupled to the first power supply terminal for regulating the operating voltage, the Vcc limiter including,(a) a transistor pair having a first control terminal coupled to receive a reference signal and a second control terminal coupled to receive a signal indicative of the operating voltage and coupled to provide a control signal; and(b) a current mirror having a first conduction terminal coupled to receive the control signal and a second conduction terminal coupled to the first power supply terminal; anda switching regulator circuit coupled to the feedback terminal for providing a regulator output signal.