FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Pavey Robert

2. Date of Event Requiring Statement (MM/DD/YYYY)
8/7/2012 

3. Issuer Name and Ticker or Trading Symbol

PEREGRINE SEMICONDUCTOR CORP [PSMI]

(Last)        (First)        (Middle)

C/O PEREGRINE SEMICONDUCTOR CORPORATION, 9380 CARROLL PARK DRIVE

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                            _____ 10% Owner
_____ Officer (give title below)          _____ Other (specify below)

(Street)

SAN DIEGO, CA 92121       

(City)              (State)              (Zip)
5. If Amendment, Date Original Filed (MM/DD/YYYY)

 

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person


Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4) 		2. Amount of Securities Beneficially Owned
(Instr. 4) 		3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5) 		4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock   178349   I   (2) Morgenthaler Partners VI, L.P.  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4) 		2. Date Exercisable and Expiration Date
(MM/DD/YYYY) 		3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4) 		4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5) 		6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Series A1 Preferred Stock     (1)   (1) Common Stock   1512031     (1) I   (2) Morgenthaler Partners VI, L.P.  
Series B1 Preferred Stock     (1)   (1) Common Stock   413529     (1) I   (2) Morgenthaler Partners VI, L.P.  
Series C1 Preferred Stock     (1)   (1) Common Stock   1263802     (1) I   (2) Morgenthaler Partners VI, L.P.  
Series D1 Preferred Stock     (1)   (1) Common Stock   183302     (1) I   (2) Morgenthaler Partners VI, L.P.  

Explanation of Responses:
( 1)  Each share of Series A1 Preferred Stock, Series B1 Preferred Stock, C1 Preferred Stock, and D1 Preferred Stock will automatically convert into one share of common stock upon the closing of the Issuers's initial public offering, and has no expiration date.
( 2)  Morgenthaler Management Partners VI, L.L.C. is the general partner of Morgenthaler Partners VI, L.P. Robert D. Pavey, a member of Morgenthaler Management Partners VI, L.L.C., disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Pavey Robert
C/O PEREGRINE SEMICONDUCTOR CORPORATION
9380 CARROLL PARK DRIVE
SAN DIEGO, CA 92121 		X



Signatures
/s/ Jay Biskupski as Attorney-in-fact for Robert 8/7/2012
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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