v3.25.2
Document And Entity Information
Jul. 31, 2025
Document Information [Line Items]  
Entity, Registrant Name MONOLITHIC POWER SYSTEMS, INC.
Document, Type 8-K
Document, Period End Date Jul. 31, 2025
Entity, Incorporation, State or Country Code DE
Entity, File Number 000-51026
Entity, Tax Identification Number 77-0466789
Entity, Address, Address Line One 5808 Lake Washington Blvd. NE
Entity, Address, City or Town Kirkland
Entity, Address, State or Province WA
Entity, Address, Postal Zip Code 98033
City Area Code 425
Local Phone Number 296-9956
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock
Trading Symbol MPWR
Security Exchange Name NASDAQ
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0001280452