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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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SC4518HEVB Scheda tecnica(PDF) 1 Page - Semtech Corporation |
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SC4518HEVB Scheda tecnica(HTML) 1 Page - Semtech Corporation |
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1 / 15 page  POWER MANAGEMENT 1 www.semtech.com SC4518H 600kHz, 2A Step-Down Switching Regulator Description Features Typical Application Circuit Applications Revision: August 22, 2007 The SC4518H is a current mode switching regulator with an integrated switch, operating at 600kHz with separate sync and enable functions. The integrated switch allows for cost effective low power solutions (peak switch current 2 amps). The sync function allows customers to synchronize to a faster clock in order to avoid frequency beating in noise sensitive applications. High frequency of operation allows for very small passive components. Current mode operation allows for fast dynamic response and instantaneous duty cycle adjustment as the input varies (ideal for CPE applications where the input is a wall plug power). The low shutdown current makes it ideal for portable applications where battery life is important. The SC4518H is a 600kHz switching regulator synchronizable to a faster frequency from 750kHz to 1.2MHz. Wide operating voltage range: 4.4V to 24V Integrated 2 Amp switch 600kHz frequency of operation Current mode controller Synchronizable to higher frequency up to 1.2MHz Precision enable threshold SO-8 EDP package. Lead free product, fully WEEE and RoHS compliant XDSL modems CPE equipment DC-DC point of load applications Portable equipment C1 VOUT D2 D1 R3 C2 L1 Enable BST 1 IN 2 SW 3 GND 4 EN 5 FB 6 COMP 7 SYNC 8 VIN C4 C3 SC4518H R1 R2 |
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Descrizione simile - SC4518HEVB |
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