<SEC-DOCUMENT>0000950123-20-007574-index.html : 20201006
<SEC-HEADER>0000950123-20-007574.hdr.sgml : 20201006
<ACCEPTANCE-DATETIME>20200803171215
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0000950123-20-007574
CONFORMED SUBMISSION TYPE:	DRS
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20200803
<PUBLIC-REL-DATE>20201006
DATE AS OF CHANGE:		20200803

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALLEGRO MICROSYSTEMS INC
		CENTRAL INDEX KEY:			0000866291
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		DRS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	377-03365
		FILM NUMBER:		201070012

	BUSINESS ADDRESS:	
		STREET 1:		115 NORTHEAST CUTOFF
		CITY:			WORCESTER
		STATE:			MA
		ZIP:			01606
		BUSINESS PHONE:		508-853-5000

	MAIL ADDRESS:	
		STREET 1:		115 NORTHEAST CUTOFF
		CITY:			WORCESTER
		STATE:			MA
		ZIP:			01606
</SEC-HEADER>
<DOCUMENT>
<TYPE>DRS
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>
Document 1 - file: filename1.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g38154g01b02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g38154g01b02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g38154g02c03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g38154g02c03.jpg

</DOCUMENT>
</SEC-DOCUMENT>