Synchronous PWM Step-Down Converter has 2 A max load current.

Press Release Summary:



Supplied in 8-pin SOIC package, PowerBlox(TM) XRP7664 accommodates operating voltage up to 18 V, is optimized for 12 V input voltage rail, and is equally capable of operating from 5 V rail. Fixed switching frequency is 340 kHz, and max efficiency is rated to 93%. With functionality addressing needs for smaller footprint in A/V equipment, IC offers adjustable output voltage down to 0.925 V, built-in protection features, as well as dedicated enable function and programmable soft start.



Original Press Release:



Exar Releases Latest Addition to Its PowerBlox(TM) Line of High Voltage, High Current Step-Down Converters



The XRP7664 is Pin and Function Compatible to Industry's Most Popular Step-down Converters

FREMONT, Calif. and MUNICH -- electronica 2010 -- Exar Corporation (Nasdaq: EXAR) unveiled today the XRP7664, a new synchronous Pulse Width Modulation (PWM) step-down converter with a maximum load current of 2 Amps and operating input voltage of up to 18V. This device is the latest addition to Exar's industry acclaimed PowerBlox family of high-voltage, high-current step-down regulators.

"This 2 Amp solution complements our existing 3, 6, 8 and 12 Amp converters from Exar's PowerBlox family and is part of Exar's continuous effort to provide designers with higher performing, cost effective solutions for point of load conversions," said Eric Pittana, director of marketing, Power Product Line. "Furthermore, the XRP7664 fills a pressing request from our customers for a technically viable and cost competitive alternative to other popular step-down converters."

Optimized for a 12V input voltage rail, yet equally capable of operating from the popular 5V rail, the XRP7664 addresses the needs for smaller footprint and substantial savings in cost sensitive applications. These include audio-video equipment such as set-top boxes, telecom, computing peripherals and more generally distributed point-of-load conversions.

Key Product Features

Reaching up to 93% efficiency in a compact "green" SOIC package, the XRP7664 operates at a fixed 340 kHz switching frequency allowing for small external components. The output voltage can be adjusted down to 0.925V, with 3% accuracy, via two external resistors, which can be achieved from any single input voltage from 4.75V to 18V. Design flexibility of any point-of-load supply with the XRP7664 is further enhanced with the availability of a dedicated enable function and programmable soft start. Built-in current limit, output over voltage and thermal shutdown protection provide the XRP7664 with fail-safe operations.

Power Management Products

Highly reliable, accurate, power management is a critical part of any technology system. Exar has a broad array of high-performance and industry-proven power management solutions including handset and lighting controls, power conversion, and standard linear devices.

Prices, Packages, Availability and Additional Information

The XRP7664 is available now in volume quantities and offered in a RoHS compliant, "green" halogen free 8-pin SOIC package. Pricing starts at $0.33 for 1K units.

Additional information on the XRP7664 product can be found at: www.exar.com/Common/Content/ProductDetails.aspx?ID=XRP7664.

Additional information on Exar's other step down PowerBlox(TM) regulators can be found at: www.exar.com/common/content/Product.aspx?Parent=15&ID=0&SubID=67.

About Exar

Exar Corporation delivers highly differentiated silicon, software and subsystem solutions for data communication, storage, consumer and industrial applications. For nearly 40 years, Exar's comprehensive knowledge of end-user markets along with the underlying analog, mixed signal and digital technology has enabled innovative solutions that meet the needs of the evolving connected world. Exar's product portfolio includes power management and interface components, communications products, storage optimization solutions, network security and applied service processors. Exar has locations worldwide providing real-time customer support to drive rapid product development. For more information about Exar, visit: www.exar.com.

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