Etron Technology, Inc.

Keng-Yi Wu

Wei-Chuan Cheng

A low dropout regulator with wide input supply voltage includes a controller, an comparing circuit, a feedback circuit, an adjustable source follower, and an adjustable driving circuit. The controller is used for detecting a supply voltage. The feedback circuit, the comparing circuit, the adjustable source follower, and the adjustable driving circuit are used for regulating an output voltage according to a reference voltage. When the adjustable source follower and the adjustable driving circuit operate in the low-voltage mode, the controller further activates a first parallel metal-oxide-semiconductor transistor in the adjustable source follower and a second parallel metal-oxide-semiconductor transistor in the adjustable driving circuit.

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Taipei, Taiwan

Keng-Yi Wu