Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-4 of Microchip Technology Incorporated of our report dated March 18, 2013 relating to the financial statements and financial statement schedule of Micrel, Incorporated, which appears in Micrel, Incorporated’s Annual Report on Form 10-K for the year ended December 31, 2012. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

San Jose, California

June 26, 2015