초록 ▼

A switching mode voltage regulator circuit that operates at reduced quiescent current levels is provided. The voltage regulator preferably includes a control circuit and a switching element that connects and disconnects filter circuitry from the control circuit. An error amplifier in the control cir

A switching mode voltage regulator circuit that operates at reduced quiescent current levels is provided. The voltage regulator preferably includes a control circuit and a switching element that connects and disconnects filter circuitry from the control circuit. An error amplifier in the control circuit is placed in a micropower operating state when the regulator is in standby mode to reduce quiescent current.

대표청구항 ▼

[ What is claimed is:] [1.] A switching regulator circuit that:(1) provides a regulated voltage to an output terminal and (2) is capable of operating in a low quiescent current standby mode, the switching regulator circuit comprising:an output circuit coupled to an input terminal and said output ter

[ What is claimed is:] [1.] A switching regulator circuit that:(1) provides a regulated voltage to an output terminal and (2) is capable of operating in a low quiescent current standby mode, the switching regulator circuit comprising:an output circuit coupled to an input terminal and said output terminal that generates a feedback signal indicative of the regulated voltage, said output circuit including a first switching element;a control circuit coupled to said output circuit that receives said feedback signal, said control circuit generating a first control signal in response to said feedback signal that controls a duty cycle of said first switching element; anda filter circuit responsive to a second control signal that reduces a current-drawing load on said control circuit when the regulator is operating in the standby mode.