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:
Oct. 06, 2026
Filed:
Dec. 14, 2023
Gigadevice Semiconductor Inc., Beijing, CN;
GIGADEVICE SEMICONDUCTOR INC., Beijing, CN;
Abstract
Disclosed is a low dropout regulator (LDO) comprising: an error amplifier (EA), whose input terminals receive a reference voltage and an LDO output voltage or its sampled voltage; a power transistor, whose gate is coupled to an output terminal of EA and whose drain is an output node for the output voltage; a first frequency compensation branch, comprising a first capacitor and a current amplifier (CA) amplifying the current flowing through the first capacitor; and a second capacitor, coupled between a second internal node of EA and the output node, to form a left-half-plane zero of LDO. The first capacitor is coupled between the output node and CA, and CA is coupled to the output terminal or a first internal node of EA to form a first negative feedback loop in LDO. Thus, this disclosure provides a highly stable LDO suitable for low power supply and wide load current range.