Skip navigation
Power Electronics

Simple Switchers Go Synchronous

National Semiconductor expands its portfolio of highly integrated dc-dc converter ICs with its introduction of the LM2852, the first member of its high-efficiency SIMPLE SYNCHRONOUS buck regulator family. Applications targeted by these chips include 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 SIMPLE SWITCHER portfolio of nonsynchronous converters. National will expand this family throughout 2005 with additional SIMPLE SYNCHRONOUS regulators with the same input-output voltage range and output currents from 1 A to 3 A.

Paul Greenland, director of product marketing for National Semiconductor’s Power Management group notes, “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.”

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, offered in a thermally enhanced TSSOP-14 package for improved reliability and efficiency, is priced at $2.50 each in 1000-unit quantities.

For more information, visit

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.