EPSON Introduces Single-Chip System Power Supply for Intel Xscale CPU

Business Wire, Jan 21, 2003

Business Editors & High-Tech Writers

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SAN JOSE, Calif.--(BUSINESS WIRE)--Jan. 21, 2003

S1F81100, 4-Channel Out-Put IC Arrives in New Compact Package for

Mobile, Wireless and Advanced Multimedia Communications

EPSON Electronics America (EEA), today announced a new single-chip system power supply IC, S1F81100, for mobile, wireless and multi-media-rich communications products using Intel(R) Xscale(TM) Technology.

The new S1F81100 integrates all of the power supply functions required by the Intel PXA250 Applications Processor and delivers low-power consumption in a new, small form factor, a prerequisite for cellular phones, PDAs, Point of Sale (PoS) terminals and Global Positioning Systems (GPS).

"This is just the first in a series of S1Fx ICs to provide features which address the designers' needs for high-performance, space-savings and low-power consumption," said Yoji Mineishi, senior marketing engineer, EPSON Standard Products. "As next-generation mobile communications reference designs are planned and as OEMs of products from ATMs to battery-driven devices continue to require power supply chips to perform conversions while saving energy, Epson will continue using its energy-saving expertise to deliver value-added chips like the new S1F81100."

The fast, 1MHz synchronous rectifier circuit features a current/voltage return and short-circuit proof circuit using a rectified pulse width modulation (PWM) controller. Four independent channels of power output are controlled separately, and are well suited for advanced communications devices.

The S1F81100 combines high conversion efficiency with low power consumption enabling the use of more compact external components including coils while implementing fast response time to load fluctuation.

The S1F81100 4-channel regulator includes:

-- CH-1 PWM controller, output 0.8V(tilde)1.5V

-- CH-2 & 3 PWM controller, output 1.8V, 2.5V & 3.3V, with settings made through the I2C bus

-- CH-4 Series regulator, output 0.8V(tilde)1.5V, the same voltage as output voltage as CH-1 in sleep status while in sleep status

-- CH-1 to 3 High conversion efficiency of 90% or greater

Availability, Packaging and Price

Samples of EPSON's S1F81100 are available now in a QFP 48-pin package. EPSON is scheduled to release a Chip Scale Package (CSP) wafer level in Q2'03. The S1F81100 is priced at $2.25 each in quantities of 100K or more.

EPSON S1F81100 Pictorial

Pictures and block diagrams of the S1F81100 are available as a Smart News Release or can be electronically transmitted upon request by contacting Sharon Guibao at info@eea.epson.com.

About EPSON Electronics America Inc.

EPSON Electronics America Inc. is a wholly-owned subsidiary of Seiko EPSON Corporation in Japan that is chartered to market, sell and support EPSON's electronic devices in the Americas. These devices include semiconductors, silicon foundry, packaging and assembly services, quartz devices, and Liquid Crystal Displays (LCDs) and device-applied products. For sales information, visit EPSON Electronics America on the Web at www.eea.epson.com.

About Seiko EPSON

Seiko EPSON is a progressive company that increases its corporate value through its innovative and creative culture. The company's main product lines comprise information-related equipment such as printers and projectors, electronic devices including semiconductors, LCDs and crystal devices, and precision products, including watches. Seiko EPSON is one of the world's leading companies of high-quality technology products that meet customer demands for increased functionality, compactness and energy efficiency with sales in fiscal 2001 of 1,274 billion yen and a workforce of 68,786 employees.

All other products, services, or company names mentioned are used for identification purposes only, and may be trademarked, registered, or copyrighted by their respective owners.

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