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National Semiconductor Introduces New Family of Low-Voltage SIMPLE SYNCHRONOUS Buck Regulators

LM2852 Switcher Designed for Low-output Voltages in Cable and xDSL Modems, DSPs, FPGAs and Set-Top Boxes

Feb 15, 2005

February 15, 2005 - National Semiconductor Corporation (NYSE:NSM) today introduced the LM2852, the first member of its new, high-efficiency SIMPLE SYNCHRONOUS™ buck regulator family. This low-voltage, high-performance switching regulator is highly integrated for low component count, making it suitable for use in cable and xDSL modems, digital signal processors, field programmable gate arrays and set-top boxes. 

The SIMPLE SYNCHRONOUS family builds on the extensive system deployment of National’s well-established SIMPLE SWITCHER® portfolio of converters, National’s flagship power management product family.  National will expand this family throughout 2005 with additional SIMPLE SYNCHRONOUS regulators with the same input–output voltage range and output currents from 1 to 3 Amps.

“These highly integrated synchronous switchers combine high-efficiency, low-voltage operation and low component count for simplified design,” said Paul Greenland, director of product marketing for National Semiconductor’s Power Management group.  “National’s new SIMPLE SYNCHRONOUS products are as quick and easy to use as the rest of our SIMPLE SWITCHER family, and all external components are fully specified with National’s WEBENCH® online power supply design tools.”

About the LM2852
The LM2852 is a synchronous, high-frequency step-down switching voltage regulator capable of driving up to a 2 A load with excellent line and load regulation. The LM2852 can accept an input voltage between 2.7 V and 5.5 V and deliver a customizable output voltage that is factory-programmable from 0.8 V to 3.3 V in 100 mV increments. The LM2852 is available with a choice of two switching frequencies, 500 kHz and 1.5 MHz. Soft-start and enable functions permit supply sequencing and reduce in-rush current.  It also features internal compensation for low component count and simplified design.  The LM2852 is available for simulation on National’s WEBENCH design tool.

Pricing and Availability
The LM2852, offered in a thermally enhanced TSSOP-14 package for improved reliability and efficiency, is priced at $2.50 each in 1,000-unit quantities. More information is available at http://www.national.com/pf/LM/LM2852.html

Note to editors: To view a high-resolution downloadable photo of the LM2852, please visit http://www.national.com/company/pressroom/gallery/power.html.

About National’s Power Management Products
National Semiconductor is the number one supplier of power management ICs with 12.8 percent market share, according to iSuppli’s 2004 voltage regulator/reference survey.  National’s power management revenue grew 29.7 percent in 2003 over the previous year, compared to 17.3 percent growth for the industry during the same time period.  National's innovative power management products include best-in-class linear regulators; power monitoring, control and reference ICs; and switching converters, such as high-voltage ICs for DC/DC conversion, switched capacitor converters, lighting management ICs and inductive switching converters.  National's WEBENCH online design tool allows designers to select a power management product, create and analyze a design, and then build custom prototypes that can be delivered within 24 hours.  More information about National’s power management products is available at

About National Semiconductor
National Semiconductor, the industry's premier analog company, creates high-performance analog devices and subsystems.  National's leading-edge products include power management circuits, display drivers, audio and operational amplifiers, communication interface products and data conversion solutions. National's key markets include wireless handsets, displays, PCs and laptops.  The company's analog products are also optimized for numerous applications in a variety of electronics markets, including medical, automotive, industrial, and test and measurement.  Headquartered in Santa Clara, California, National reported sales of $1.98 billion for fiscal 2004, which ended May 30, 2004.  Additional company and product information is available at