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LINEAR TECHNOLOGY GmbH Oskar-Messter-Straße 24 85737 Ismaning, Germany http://www.linear.com
Contact Ralf Stegmann +49 7131 92340
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LINEAR TECHNOLOGY GmbH

Gleichspannungswandler-Controller für 2,75V–4,5V Eingangsspannung treibt N-Kanal-MOSFETs und liefert bis zu 20A Ausgangsstrom

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Linear Technology Corporation präsentiert den LTC3822, einen Synchron-DC/DC-Abwärtswandler-Controller für 2,75V bis 4,5V Eingangsspannung, der zur Ansteuerung von N-Kanal-MOSFETs keine externe Gate-Steuerspannung benötigt. Der LTC3822 verwendet zur Strommessung den RDS(ON) des MOSFETs; das macht einen externen Strommesswiderstand entbehrlich, verbessert den Wirkungsgrad und verringert die Gesamtkosten der Lösung. Obwohl der LTC3822 zur Ansteuerung von N-Kanal-MOSFETs vorgesehen ist, kann er zur Minimierung der Dropout-Spannung bis zu einem Tastverhältnis von 99% betrieben werden. Die im Bereich von 300kHz bis 750kHz einstellbare Schaltfrequenz ermöglicht es Entwicklern, Interferenzen mit anderen Systemkomponenten zu minimieren und den Wirkungsgrad zu optimieren. Typische Anwendungen sind Point-of-Load-Wandler mit Eingangsspannungen ab 3,3V
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The publisher indicated in each case (see company info by clicking on image/title or company info in the right-hand column) is solely responsible for the stories above, the event or job offer shown and for the image and audio material displayed. As a rule, the publisher is also the author of the texts and the attached image, audio and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.