Jun 11, 2003 
With efficiencies better or comparable to competing implementations in the MLF/QFN/Power Block packages, these new devices in the LITTLE FOOT SO-16 feature a 38% or smaller standard footprint, simplifying design, assembly, soldering, and layout.
The n-channel Si4738CY (20 V), Si4770CY (20 V), Si4724CY (30 V), Si4732CY (30 V), and Si4768CY (30 V) synchronous MOSFETs with integrated driver circuitry are designed to extend battery life and/or enable more efficient use of power. Applications will include high-frequency, multi-phase dc-to-dc switchmode power supplies for CPU core, graphics control, chipset, and auxiliary power in systems including desktop computers, servers, workstations, notebook computers and tablet PCs, and point-of-load (POL) applications for fixed telecom systems.
With optimized on-resistance values and �shoot-thru� protection for low-side operation, and gate-to-drain Q optimization for high-side operation, the new devices provide high efficiency while enabling an integrated board layout with significant space savings over discrete solutions.
By integrating two MOSFETs and a driver in a compact SO-16 package, the Vishay Siliconix devices released today offer reduced gate-drive losses and higher switching frequencies while simplifying board layout and allowing designers to implement less-complicated controller solutions. The Si4724CY also features an integrated Schottky diode, further reducing the number of components required on the printed circuit board.
Each device features a switching frequency of up to 700 kHz+, driver impedance of 1 or 3 ohms, and operation down to 4.5 V, as well as break-before-make action and under-voltage lockout.
Samples and production quantities of the new LITTLE FOOT Plus Driver products are available now with lead times of 10 to 12 weeks for larger orders. Pricing for U.S. delivery in 100,000-piece quantities ranges from $2.10 to $2.92.
Siliconix, a company of Vishay Intertechnology, Inc., is a leading manufacturer of power MOSFETs, power ICs, and analog switches for computers, cell phones, fixed communications networks, automobiles, and other electronic systems. With 2001 worldwide sales of $305.6 million, the Company's facilities include a Class 1, six-inch wafer fab dedicated to the manufacture of power products in Santa Clara, California, and an affiliated Class 1, six-inch wafer fab located in Itzehoe, Germany. Power products are also manufactured by a subcontractor in Japan. Analog switches, analog multiplexers, and low-power transistors are fabricated by subcontractors in Dresden, Germany, and in Beijing, China. Assembly and test facilities include a company-owned facility in Taiwan, a joint venture in Shanghai, China, and subcontractors in the Philippines, China, and the United States.
Vishay, a Fortune 1,000 Company listed on the NYSE, is one of the world's largest manufacturers of discrete semiconductors (diodes, rectifiers, transistors, optoelectronics, and selected ICs) and passive electronic components (resistors, capacitors, inductors, and transducers). The Company�s components can be found in products manufactured in a very broad range of industries worldwide. Vishay is headquartered in Malvern, Pennsylvania, and has plants in sixteen countries employing over 25,000 people. Vishay can be found on the Internet at http://www.vishay.com.
Note to editors: A previous version of this release moved over BusinessWire on February 5.
LITTLE FOOT� is a registered trademark of Siliconix incorporated.
Agency Contact:
Bob Decker
Wall Street Communications
Telephone: 1-215-209-0233
Email: bob.decker@wallstcom.com
READER CONTACT INFORMATION
THE AMERICAS
Vishay Siliconix
2201 Laurelwood Road
Santa Clara, California 95054
+1-619-336-0860
info@vishay.com
www.vishay.com
EUROPE
Ms. Marian Neil
Vishay Ltd.
Pallion Industrial Estate
Sunderland SR4 6SU
United Kingdom
Telephone: 44 191 5144155
Facsimile: 44 191 5658245
Ms. Margarete Seeharsch
Vishay-Semiconductor GmbH
Theresienstrasse 2
74072 Heilbronn
Germany
Telephone: 49 71 31 67 2831
Fax: 49 71 31 67 2423
Ms. Nathalie Caoudal
Vishay S.A.
4, rue de Salonique
95101 Argenteuil
France
Telephone: 33 1 39 98 22 56
Fax: 33 1 39 98 22 20
ASIA/PACIFIC
Ms. Sandra Sim
Vishay Intertechnology Asia Pte. Ltd.
Keppel Building #02-00
25 Tampines Street 92
Singapore 528877
Rep. of Singapore
Telephone: (65) 6780-7849
Fax: (65) 6788-0988
