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(11)

EP 1 761 953 A1

(12)

(43) Date of publication: 14.03.2007 Bulletin 2007/11 (21) Application number: 04756535.3 (22) Date of filing: 30.06.2004

(51) International Patent Classification (IPC):  H01L 27/108(2006.01) H01L 29/94(2006.01) H01L 29/76(2006.01) H01L 31/119(2006.01) (86) International application number: PCT/US2004/021211 (87) International publication number: WO 2006/011882 (02.02.2006 Gazette 2006/05)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (71) Applicants: Advanced Analogic Technologies, Inc. Sunnyvale, CA 94085-4519 (US) Advanced Analogic Technologies (Hong Kong) Limited Kowloon, Hong Kong (CN)	(72) Inventors: WILLIAMS, Richard Cupertino, CA 95014 (US) CORNELL, Michael Campbell, CA 95008 (US) Chan, Wai Tien New Terrirtories, Hong Kong (CN) (74) Representative: Freeman, Jacqueline Carol  W.P. Thompson & Co. 55 Drury Lane London WC2B 5SQ London WC2B 5SQ (GB)