The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2020
Filed:
Apr. 03, 2019
Dialog Semiconductor (Uk) Limited, London, GB;
Cang Ji, Kirchheim/Teck, DE;
Dialog Semiconductor (UK) Limited, London, GB;
Abstract
Linear voltage regulators and a method for low-dropout LDO regulators are presented. Specifically, LDO regulators with circuits for noise reduction are discussed. A linear voltage regulator has a first noise reduction filter, an error amplifier circuit, and a pass device. The pass device may be coupled between an input and output terminal of the regulator. The error amplifier circuit generates a control signal for controlling the pass device based on a filtered reference signal and an output voltage at the output terminal of the regulator. The first noise reduction filter generates the filtered reference signal based on a reference voltage of a reference voltage source by reducing noise originating from the reference voltage source or noise generated by one or more passive components coupled between the reference voltage source and the first noise reduction filter.