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Fixed output step-down switching voltage regulator offers desirable transient response.

Fairchild Semiconductor's FAN5358 is a step-down switching voltage regulator that delivers a fixed output from an input voltage supply of 2.7 V to 5.5 V. Using a proprietary architecture with synchronous rectification, the device is capable of delivering 500 mA and maintaining a very high efficiency of over 80 percent at load currents as low as 1 mA. At moderate and light loads, the FAN5358 uses pulse frequency modulation to operate the device in power-save mode, consuming low quiescent current (25 [micro]A typical) while providing desirable transient response during large load swings.

[ILLUSTRATION OMITTED]

Fairchild Semiconductor

888-522-5372, www.fairchildsemi.com

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Title Annotation:INTEGRATED CIRCUITS
Publication:ECN-Electronic Component News
Date:Nov 1, 2010
Words:103
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