VOLTAGE REGULATOR

To provide a voltage regulator with a wide dynamic range of output current.SOLUTION: Provided are: an error amplifier that controls the gate of an output transistor so that a feedback voltage based on an output voltage of an output terminal matches a first reference voltage; a first transistor with...

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Bibliographic Details
Main Author SAKAGUCHI KAORU
Format Patent
LanguageEnglish
Japanese
Published 03.12.2020
Subjects
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:To provide a voltage regulator with a wide dynamic range of output current.SOLUTION: Provided are: an error amplifier that controls the gate of an output transistor so that a feedback voltage based on an output voltage of an output terminal matches a first reference voltage; a first transistor with a gate to which the second reference voltage is input; and a first resistor that is connected between the gate of the output transistor and the source of the first transistor and functions as a phase compensation resistor in which current flows when an output current of the output terminal is small.SELECTED DRAWING: Figure 1 【課題】出力電流のダイナミックレンジが広いボルテージレギュレータを提供する。【解決手段】出力端子の出力電圧に基づく帰還電圧と第一の基準電圧とが一致するように出力トランジスタのゲートを制御する誤差増幅器と、ゲートに第二の基準電圧が入力される第一のトランジスタと、出力トランジスタのゲートと第一のトランジスタのソースの間に接続され、出力端子の出力電流が小さい時に電流が流れて位相補償抵抗として機能する第一の抵抗を備えたことを特徴とする。【選択図】図１
Bibliography:Application Number: JP20190098546