Faster clocking for fourth-generation switcher

The LM2698 is the first in the fourth generation of National Semiconductor's award-winning Simple Switcher regulators.

The LM2698 is the first in the fourth generation of National Semiconductor's award-winning Simple Switcher regulators.

It uses current-mode control (without the need for a sense resistor) and pulsewidth modulation to deliver superior transient response, line and load regulation and simplicity of design.

The 0.2ohm 1.3A (guaranteed) internal switch and 1.3MHz clock combine for unparalleled power density.

Optimised features - such as 2.2 to 12V input voltage range, user selectable 0.6 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 2.5 to 3.3V, 5 to 12V or other boost conversion.

Fundamental to the advantage of National's Simple Switcher line is the Microsoft Windows compatibility of the Switchers Made Simple design software.

The software provides customers with a complete solution including schematics, component lists, guaranteed circuit performance and more.

National's design software and licensed software (Simple Switchers Made Simple, WebSIM and WebTHERM) plus National's demo boards provide a total solution that has made the Simple Switcher family the most widely accepted DC/DC convertor.

Since system power supply needs are often not defined until late in a project, the Simple Switcher solution can be the key to getting products to market quickly and reliably.

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