<SEC-DOCUMENT>0001280452-19-000099-index.html : 20190724
<SEC-HEADER>0001280452-19-000099.hdr.sgml : 20190724
<ACCEPTANCE-DATETIME>20190724165837
ACCESSION NUMBER:		0001280452-19-000099
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190722
FILED AS OF DATE:		20190724
DATE AS OF CHANGE:		20190724

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Zhou Jeff
		CENTRAL INDEX KEY:			0001480772

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51026
		FILM NUMBER:		19971628

	MAIL ADDRESS:	
		STREET 1:		6409 GUADALUPE MINES ROAD
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95120

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MONOLITHIC POWER SYSTEMS INC
		CENTRAL INDEX KEY:			0001280452
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				770466789
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4040 LAKE WASHINGTON BLVD. NE
		STREET 2:		SUITE 201
		CITY:			KIRKLAND
		STATE:			WA
		ZIP:			98033
		BUSINESS PHONE:		425-296-9956

	MAIL ADDRESS:	
		STREET 1:		4040 LAKE WASHINGTON BLVD. NE
		STREET 2:		SUITE 201
		CITY:			KIRKLAND
		STATE:			WA
		ZIP:			98033
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
Document 1 - file: edgardoc.html

Document 1 - RAW XML: edgardoc.xml

</DOCUMENT>
</SEC-DOCUMENT>