Note 6 - Segment Information

9 Months Ended

Sep. 30, 2011

Segment Reporting Disclosure [Text Block]

6. Segment Information

As defined by the requirements of ASC 280-10-50 Segment Reporting – Overall - Disclosure, the Company operates in one reportable segment: the design, development, marketing and sale of high-performance, mixed-signal analog semiconductors for the communications, computing, consumer, and industrial markets. Geographic revenue is based on the location to which customer shipments are delivered. For the three and nine months ended September 30, 2011 and 2010, the Company derived substantially all of its revenue from sales to customers located outside North America. The following is a list of customers whose sales exceeded 10% of revenue for the three and nine months ended September 30, 2011 and 2010.

		Three months ended September 30,						Nine months ended September 30,
Customers		2011			2010			2011			2010
	A		21	%		18	%		18	%		13	%
	B		10	%		*			*			*
	C		*			*			*			10	%

(*) represents less than 10%

The following is a summary of revenue by geographic region based on customer ship-to location (in thousands):

	Three months ended September 30,				Nine months ended September 30,
Country	2011		2010		2011		2010
China	$	32,480	$	31,285	$	87,360	$	82,430
Taiwan		6,110		9,286		16,395		20,182
Korea		2,754		9,640		11,598		28,544
Europe		3,736		5,369		10,778		15,449
Japan		2,475		4,967		8,193		10,274
USA		1,230		1,833		3,196		7,093
Other		4,177		3,463		11,538		7,811
Total	$	52,962	$	65,843	$	149,058	$	171,783

The following is a summary of revenue by product family (in thousands):

	Three months ended September 30,				Nine months ended September 30,
Product Family	2011		2010		2011		2010
DC to DC Converters	$	44,446	$	55,230	$	124,325	$	141,082
Lighting Control Products		8,026		9,380		20,771		24,324
Audio Amplifiers		490		1,233		3,962		6,377
Total	$	52,962	$	65,843	$	149,058	$	171,783

The following is a summary of long-lived assets by geographic region (in thousands):

	September 30, 2011		December 31, 2010
China	$	33,084	$	34,468
United States		14,480		2,719
Taiwan		91		134
Japan		73		85
Other		50		58
TOTAL	$	47,778	$	37,464

The long-lived assets for the United States increased significantly, as the Company purchased its San Jose headquarters in the third quarter of 2011 for $11.0 million.