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National Semiconductor Unveils New 250 mA LDO Regulator to Increase Operating Time of Battery-Operated Systems

Nov 19, 2001

November 19, 2001 - Extending its leadership in power management solutions, National Semiconductor Corporation (NYSE: NSM) today introduced a new 250 mA low dropout (LDO) regulator that increases operating time for wireless, laptop and personal digital assistant (PDA) applications. This new device provides low power dissipation, high power supply rejection ratio (PSRR), low dropout voltage, ultra-low noise as well as design flexibility and easy system management. (http://www.national.com/pf/LP/LP2992.html)

National's LP2992 LDO offers two key enhancements over the popular LP2985 family: lower dropout and higher current capability.  Improvements in dropout voltage allow National's customers to architect systems that discharge batteries to the lowest possible level.  This creates additional operating time for end-user applications, which include wireless and handheld portable battery-powered systems, handheld meters, cellular phones, pagers, PDAs, laptops and global positioning satellite (GPS) systems.

Building upon the popular characteristics of its predecessor, the new high performance LP2992 LDO regulator features dropout voltage of 250 mV at 150 mA; output voltage accuracy of ?1.0%; low output capacitor requirements; and over-temperature and over-current protection.

 "National Semiconductor continues to lead the linear and LDO regulator market by providing designers with the right power supply for design efficiency and fast time-to-market," said Joe Bolsenga, strategic marketing manager of the Power Management Products Group at National Semiconductor.  "This product will be key for customers whose current requirements have unexpectedly grown beyond 150 mA and now need a pin to pin replacement for the LP2985. The LP2992 will also be valuable for customers requiring only 150 mA current capability who need improvements in dropout voltage over the LP2985."

The LP2992 is offered in a cost-effective SOT-23-5 package and leadless leadframe package (LLP).  The LLP package will be available later especially for applications that require additional power dissipation.  The LP2992 in the LLP package will give system designers a versatile, aggressively priced, small form factor LDO voltage regulator with a full feature set. 

Pricing and Availability
National's new LP2992 LDO regulator is now available in the SOT-23-5 packaging and is priced at $0.39 each in 1,000 units.

About National Semiconductor
National Semiconductor is the premier analog company driving the information age. Combining real-world analog and state-of-the-art digital technology, the company is focused on the fast growing markets for wireless handsets; information appliances; information infrastructure; and display, imaging and human interface technologies.  With headquarters in Santa Clara, California, National reported sales of $2.1 billion for fiscal year 2001 and employs about 9,700 people worldwide.  Additional company and product information is available on the World Wide Web at www.national.com