Low dropout regulator circuit with current surge suppression

The invention discloses a low-dropout linear voltage regulator circuit with a current surge suppression function. The low-dropout linear voltage regulator circuit comprises a low-dropout linear voltage stabilizing circuit, a surge current suppression circuit I1 and a transistor M7, wherein the power...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DING YUTING, HAO MENGLIANG, XIA XIAOJUAN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a low-dropout linear voltage regulator circuit with a current surge suppression function. The low-dropout linear voltage regulator circuit comprises a low-dropout linear voltage stabilizing circuit, a surge current suppression circuit I1 and a transistor M7, wherein the power supply end of the low-dropout linear voltage stabilizing circuit is in butt joint with an external power supply, and the sampling current output end of the low-dropout linear voltage stabilizing circuit is in butt joint with the sampling current input end of the surge current suppression circuit I1; the voltage output end of the low-dropout linear voltage stabilizing circuit is connected with the voltage input end of the surge current suppression circuit I1, and the connection point forms the output end Vout of the low-dropout linear voltage stabilizer circuit; the self-adaptive current end of the low-dropout linear voltage stabilizing circuit is in butt joint with the drain electrode of the transistor M7, the gri