SEGMENT AND GEOGRAPHIC INFORMATION

The Company operates in

one

reportable segment that includes the design, development, marketing and sale of high-performance analog solutions for the consumer, industrial, computing and storage, and communications markets. The Company’s chief operating decision maker is its Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. The Company derives a majority of its revenue from sales to customers located outside North America, with geographic revenue based on the customers’ ship-to locations.

The Company sells its products primarily through

third

-party distributors and value-added resellers, and directly to original equipment manufacturers, original design manufacturers and electronic manufacturing service providers. The following table summarizes

two

customers with sales greater than

10%

of the Company's total revenue:

	Three Months Ended March 31,
Customer	2017			2016
Distributor A		18	%		20	%
Distributor B		10	%		*

* Represents less than

10%.

The following table summarizes

two

customers with accounts receivable balances greater than

10%

of the Company’s total accounts receivable:

	March 31,			December 31,
Customer	2017			2016
Distributor A		20	%		19	%
Distributor B		13	%		17	%

Both of the customers are

third

-party distributors. The Company’s agreements with these distributors were made in the ordinary course of business and

may

be terminated with or without cause by these distributors with advance notice. Although the Company

may

experience a short-term disruption in the distribution of its products and a short-term decline in revenue if its agreement with either of these distributors was terminated, the Company believes that such termination would not have a material adverse effect on its financial statements because it would be able to engage alternative distributors, resellers and other distribution channels to deliver its products to end customers within a few quarters following the termination of an agreement with the distributor.

The following is a summary of revenue by geographic regions (in thousands):

	Three Months Ended March 31,
Country or Region	2017		2016
China	$	56,084	$	52,388
Taiwan		14,875		8,855
Korea		8,161		7,093
Europe		7,907		6,985
Southeast Asia		6,372		4,338
Japan		4,825		2,650
United States		2,042		2,146
Other		96		57
Total	$	100,362	$	84,512

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

	Three Months Ended March 31,
Product Family	2017		2016
DC to DC	$	91,424	$	77,118
Lighting Control		8,938		7,394
Total	$	100,362	$	84,512

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

	March 31,		December 31,
Country	2017		2016
United States	$	52,270	$	50,242
China		45,339		45,728
Bermuda		9,060		9,573
Taiwan		9,576		8,919
Other		433		571
Total	$	116,678	$	115,033