. 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, computing and storage, industrial, automotive 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 who are distributors with sales greater than

10%

of the Company's total revenue:

	Three Months Ended September 30,						Nine Months Ended September 30,
Customer	2017			2016			2017			2016
Distributor A		17	%		22	%		17	%		22	%
Distributor B		15	%		*			*			*

e following table summarizes

three

customers who are distributors with accounts receivable balances greater than

10%

of the Company’s total accounts receivable:

	September 30,			December 31,
Customer	2017			2016
Distributor A		17	%		19	%
Distributor B		16	%		*
Distributor C		12	%		17	%

__________________

Represents less than

10%.

The Company

’s agreements with these

third

-party 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 any 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 short period following the termination of the agreement with the distributor.

The following is a summary of reve

nue by geographic regions (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Country or Region	2017		2016		2017		2016
China	$	66,645	$	67,372	$	185,054	$	180,689
Taiwan		27,387		12,786		59,548		31,801
Europe		10,726		7,193		28,227		21,232
Korea		9,279		7,405		25,594		21,522
Southeast Asia		7,179		5,370		20,476		13,210
Japan		4,813		4,084		14,584		9,771
United States		2,781		2,164		7,711		6,613
Other		129		82		305		209
Total	$	128,939	$	106,456	$	341,499	$	285,047

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

	Three Months Ended September 30,				Nine Months Ended September 30,
Product Family	2017		2016		2017		2016
DC to DC	$	119,089	$	95,615	$	312,700	$	256,953
Lighting Control		9,850		10,841		28,799		28,094
Total	$	128,939	$	106,456	$	341,499	$	285,047

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

	September 30,		December 31,
Country	2017		2016
United States	$	61,447	$	50,242
China		46,175		45,728
Taiwan		16,908		8,919
Bermuda		8,035		9,573
Other		413		571
Total	$	132,978	$	115,033