SAN FRANCISCO (MarketWatch) -- Moody's Investors Service on Friday placed ratings of Freescale Semiconductor Inc. on review for possible downgrade after news that a private equity consortium is buying out the company for $17.6 billion. Moody's said its review will focus on the operating strategy of the company under new ownership and the proposed financing and capital structure arising from this acquisition. The agency added that the ratings could be subject to a multi-notch downgrade depending on the level of debt incurred in the transaction.