LDO circuit based on chopping technology

The invention discloses an LDO circuit based on a chopping technology. The LDO circuit comprises an MOS tube M1, an MOS tube M2, an MOS tube M3 and an MOS tube M5; the grid electrode of the MOS tube M1 is connected with an input end Vbg, the source electrode of the MOS tube M1 is connected with the...

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Bibliographic Details
Main Authors DONG YUHUA, ZHANG YE, SHI ZHAN, ZHANG JUNXING, FENG CHONG, YAN GUOQIANG
Format Patent
LanguageChinese
English
Published 26.03.2021
Subjects
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:The invention discloses an LDO circuit based on a chopping technology. The LDO circuit comprises an MOS tube M1, an MOS tube M2, an MOS tube M3 and an MOS tube M5; the grid electrode of the MOS tube M1 is connected with an input end Vbg, the source electrode of the MOS tube M1 is connected with the drain electrode of the MOS tube M5 and the source electrode of the MOS tube M2, and the drain electrode of the MOS tube M1 is connected with the drain electrode of the MOS tube M3,the drain electrode of the MOS tube M6 is connected with the grid electrode of the MOS tube M9, and the source electrodeof the MOS tube M5 is connected with the drain electrode of the MOS tube M6, the source electrode of the MOS tube M8, the source electrode of the MOS tube M10, the source electrode of the MOS tube M12 and the voltage VDD. The LDO circuit has the advantages that the structure is simple, the occupied on-chip area is small, and use of portable equipment is better facilitated. The LDO circuit has excellent noise performance
Bibliography:Application Number: CN202011423180