Low-dropout voltage regulator circuit
US-12164317-B2 · Dec 10, 2024 · US
Voltage regulator
US9323262B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9323262-B2 |
| Application number | US-201514599158-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 16, 2015 |
| Priority date | Jan 22, 2014 |
| Publication date | Apr 26, 2016 |
| Grant date | Apr 26, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Provided is a voltage regulator capable of preventing breakdown of a gate of an input transistor even when an overshoot occurs at an output terminal. The voltage regulator includes a diode, which is provided to an input transistor to which a divided voltage of an error amplifier circuit is input. The diode includes a cathode connected to a source of the input transistor and an anode connected to a gate thereof.
First claim
Opening claim text (preview).
What is claimed is: 1. A voltage regulator comprising an error amplifier circuit configured to amplify a difference between a divided voltage obtained by dividing an output voltage output from an output transistor and a reference voltage output from a reference voltage circuit to output the amplified difference, thereby controlling a gate of the output transistor, the error amplifier circuit comprising: a first transistor that is part of a current mirror circuit, the first transistor having a drain; an input transistor having a source that is coupled to the drain of the first transistor and a gate to which the divided voltage is input; a first diode including a cathode connected to the drain of the first transistor and an anode connected to a gate of the input transistor, wherein the first diode protects the gate of the input transistor when an overshoot occurs in the output voltage; a second diode including a cathode connected to the gate of the input transistor and an anode connected to a ground terminal, wherein the second diode causes a leakage current of the first diode to flow, thereby reducing an influence of the leakage current of the first diode on the divided voltage, wherein the second diode is of a same configuration as the first diode such that the first and second diodes have matching leakages, wherein the second diode compensates for the leakage caused by the first diode.
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9323262B2 cover?
- Provided is a voltage regulator capable of preventing breakdown of a gate of an input transistor even when an overshoot occurs at an output terminal. The voltage regulator includes a diode, which is provided to an input transistor to which a divided voltage of an error amplifier circuit is input. The diode includes a cathode connected to a source of the input transistor and an anode connected t…
- Who is the assignee on this patent?
- Seiko Instr Inc, Sii Semiconductor Corp
- What technology area does this patent fall under?
- Primary CPC classification G05F1/56. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).