Exhibit 23.1
CONSENT OF INDEPENDENT AUDITORS
We consent to the incorporation by reference in the following Registration Statements:
| (i) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 033-85156), filed October 14, 1994 with respect to registration of 300,000 shares of the Company’s common stock for the Company’s 1994 Long-Term Stock Incentive Plan; |
| (ii) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 033-85158), with respect to registration of 100,000 shares of the Company’s common stock for the Company’s 1994 Non-Employee Directors’ Stock Option Plan; |
| (iii) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-00597), filed January 31, 1996 with respect to registration of 400,000 shares of the Company’s common stock for the Company’s 1994 Long-Term Stock Incentive Plan; |
| (iv) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-00599), filed January 31, 1996 with respect to registration of 150,000 shares of the Company’s common stock for the Company’s 1994 Non-Employee Directors Stock Option Plan; |
| (v) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-27777) filed May 23, 1997 with respect to registration of 800,000 shares of the Company’s common stock for the 1994-Long Term Stock Incentive Plan; |
| (vi) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-44033), filed January 9, 1998 with respect to registration of 800,000 shares of the Company’s common stock for the Company’s 1994 Long-Term Stock Incentive Plan; |
| (vii) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-80319), filed June 9, 1999 with respect to registration of 2,150,868 shares of the Company’s common stock for the Company’s Long-Term Stock Incentive Plan; |
| (viii) | the Registration Statement on Form S-3 of Semtech Corporation (File No. 333-95183), filed January 21, 2000 with respect to registration of 495,403 shares of the Company’s common stock in conjunction with the acquisition of USAR Systems, Incorporated; |
| (ix) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-50448) filed November 22, 2000 with respect to registration of 4,000,000 shares of the Company’s common stock for the Company’s Non-Director and Non-Executive Officer Long-Term Stock Incentive Plan; |
| (x) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-60396) filed May 8, 2001 with respect to registration of 4,000,000 shares of the Company’s common stock for the Company’s Non-Director and Non-Executive Officer Long-Term Stock Incentive Plan and 200,000 shares of the Company’s common stock for Non-Statutory Stock Option Grants made to Directors in December 1997; |
| (xi) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-118802) filed September 3, 2004 with respect to registration of 550,000 shares of the Company’s common stock for Non-Qualified Stock Option Grants made to certain executive officers in November 2002 and April 2004; |
| (xii) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-118804) filed September 3, 2004 with respect to registration of 4,902,200 shares of the Company’s common stock for the Company’s Long-Term Stock Incentive Plan; |
| (xiii) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-142151) filed April 16, 2007 with respect to registration of 3,097,800 shares of the Company’s common stock for the Company’s Long-Term Stock Incentive Plan; |
| (xiv) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-142153) filed April 16, 2007 with respect to registration of 600,000 shares of the Company’s common stock for Non-Qualified Stock Option Grants and Restricted Stock Awards to Chief Executive Officer Maheswaran; |
| (xv) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-152939) filed August 11, 2008 with respect to registration of 11,791,337 shares of the Company’s common stock for the Company’s 2008 Long-Term Equity Incentive Plan; and |
| (xvi) | the Registration Statement on Form S-8 of Semtech Corporation (File No. 333-163780) filed December 16, 2009 with respect to registration of 796,661 shares of Semtech’s common stock for Semtech’s 2009 Long-Term Equity Inducement Plan, 266,020 shares of Semtech’s common stock for Semtech’s 2000 SMI Assumed Plan and 683,205 shares of Semtech’s common stock for Semtech’s 2007 SMI Assumed Plan |
of our report dated April 24, 2009, relating to the financial statements of Sierra Monolithics, Inc. appearing in this Current Report on Form 8-K/A of Semtech Corporation dated February 22, 2010.
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| /s/ Deloitte & Touche LLP |
| Los Angeles, CA |
| February 22, 2010 |
