National Semiconductor Debuts LM2698 Regulator
National Semiconductor (Santa Clara, CA) announced the LM2698, the latest innovation in switching regulators for boost applications that combines boost switching technology and world-class design tools. This new solution is designed to enable a high performance step-up regulator in minimum time and PCB area.
The LM2698 is the first in the fourth generation of National’s Simple Switcher regulators. It uses current-mode control (without the need for a sense resistor) and pulse-width modulation to deliver transient response, line and load regulation, and simplicity of design. The 0.2-ohm 1.3A internal switch and 1.3MHz clock combine for unparalleled power density.
Optimized features -- such as 2.2V to 12V input voltage range, user selectable 0.6MHz or 1.3MHz clock and low-noise, easily filtered output -- make the LM2698 an ideal solution for DSL and cable modems, battery-powered systems, or applications requiring 2.5V to 3.3V, 5V to 12V or other boost conversion.
"Eighty percent of the demand for switching regulators comes from non-power supply designers," said John Perzow, strategic marketing manager in National’s power management group. "Designers with little or no power supply experience can easily combine National’s high-performance switching regulators with Simple Switcher design tools to create elegant power supply solutions. The LM2698 represents a new level of boost regulator performance and improves engineering productivity."
The LM2698 is now available in the tiny MSOP-8 package with a smaller footprint than previous designs, and is priced at $1.83 each in 1,000-lot units.