. 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 computing and storage, automotive, industrial, communications and consumer 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 those customers with sales equal to or greater than

10%

of the Company's total revenue, or with accounts receivable balances greater than

10%

of the Company’s total accounts receivable:

	Revenue						Accounts Receivable
	Three Months Ended March 31,						March 31,			December 31,
Customer	2019			2018			2019			2018
A (distributor)		23	%		20	%		22	%		25	%
B (distributor)		*			10	%		17	%		16	%

___________

* 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 customers 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 customers 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 customer.

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

	Three Months Ended March 31,
Country or Region	2019		2018
China	$	76,198	$	72,865
Taiwan		21,347		16,391
Europe		12,984		11,465
Korea		9,611		9,787
Southeast Asia		8,672		9,024
Japan		6,642		5,613
United States		5,806		3,755
Other		103		250
Total	$	141,363	$	129,150

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

	Three Months Ended March 31,
Product Family	2019		2018
DC to DC	$	132,711	$	119,268
Lighting Control		8,652		9,882
Total	$	141,363	$	129,150

The following is a summary of property and equipment, net by geographic regions (in thousands):

	March 31,		December 31,
Country	2019		2018
China	$	98,117	$	93,096
United States		89,720		39,054
Taiwan		16,854		16,972
Other		806		879
Total	$	205,497	$	150,001