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:
Jun. 05, 2018
Filed:
Jun. 16, 2017
Apple Inc., Cupertino, CA (US);
Dingkun Du, Santa Clara, CA (US);
Jay B. Fletcher, Austin, TX (US);
Apple Inc., Cupertino, CA (US);
Abstract
A voltage regulator is disclosed. The voltage regulator is cascaded, including first and second stages. The first stage may be a capacitor-less first stage that includes a source follower implemented with a first PMOS transistor, with the first PMOS transistor receiving a first reference voltage on its respective gate terminal. The first stage is coupled to receive a first voltage from an external voltage supply, and to provide a second voltage to the second stage. The second stage may be directly and exclusively coupled to the first stage, with no capacitor or connection for one coupled to the first stage output. The second stage may provide an output voltage, on an output node, with the output voltage being less than the second voltage.