Item 8.01 Other Events.

On September 10, 2009, Volterra Semiconductor Corporation issued a press release updating revenue and earnings expectations for the third quarter of 2009. A copy of the press release is attached as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including Exhibit 99.1, is being furnished and shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of such Section, nor shall it be deemed incorporated by reference in any such filing under the Security Act of 1933, as amended, or the Exchange Act, except as otherwise expressly stated in such filing.

Item 9.01 Financial Statements and Exhibits.

Exhibit Number........................Description of Exhibit 99.1..........................Press release dated September 10, 2009

---

Top of the Form