Chip maker LSI Logic Corp today announced that it has filed a registration statement for an offering of $287.5m in convertible subordinated notes due 2006, including an over-allotment option. The filing also covers the sale of 5.75 million shares of its common stock, including an over-allotment option. At Thursday’s closing price, the stock offering would be worth up to $290.7m. LSI said it intends to use the proceeds of the offerings to repay a portion of the bank debt incurred to acquire Symbios Inc in August 1998, as well as for general corporate purposes. The company also said that neither sale was contingent upon the other. Both are being managed by a group that includes Morgan Stanley & Co, BancBoston Robertson Stephens, JP Morgan & Co and Merrill Lynch & Co. Back in March, LSI raised $300m in a private placement of debt securities.