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National integrates multiple power controllers on a chip
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National integrates multiple power controllers on a chip
By Semiconductor Business News
April 4, 2001 (6:07 p.m. EST)
URL: http://www.eetimes.com/story/OEG20010404S0057
SANTA CLARA, Calif. -- National Semiconductor Corp. today (April 4) rolled out a pair of highly integrated power management controllers, designed to provide complete support for systems based on microprocessors, digital signal processors (DSPs), and field programmable gate arrays (FPGAs). National said its new synchronous step-down regulator controllers have multiple outputs that can power notebook computers, networking equipment, internet appliances, set-top boxes, graphics cards (including DDR memory), and industrial computer boards. "Multiple IC process technologies dictate more and varied power sources in computer-based system design," said John Perzow, business marketing manager for power management products at National. National said the LM2633 combines two switching controllers and a linear controller. The LM2645 combines all the features of the LM2633, plus a 3.3-V/50-mA linear regulator. The synchronous switching controllers ca n operate out of phase, thereby decreasing the input peak current, said the company. The LM2633MTD and the LM2645 are housed in a 48-pin TSSOP package and are priced at $4.25 each in quantities of 1,000.
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