Form Type:  SD
Filing Date:  5/27/2020 
CIK:  0000833640 
Address:  5245 HELLYER AVE 
City, State, Zip:  SAN JOSE, California 95138 
Telephone:  (408) 414-9200 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
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Trade Time: 
02:01 PM EST  
Market Cap: 
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Description of Business
We design, develop and market analog and mixed-signal integrated circuits (ICs) and other electronic components and circuitry used in high-voltage power conversion. Our products are used in power converters that convert electricity from a high-voltage source to the type of power required for a specified downstream use. In most cases, this conversion entails, among other functions, converting alternating current (AC) to direct current (DC) or vice versa, reducing or increasing the voltage, and regulating the output voltage and/or current according to the customer's specifications. A large percentage of our products are ICs used in AC-DC power supplies, which convert the high-voltage AC from a wall outlet to the low-voltage DC required by most electronic devices.
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  EXHIBIT 1.01