デザイン・ファイル
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Advanced DDR memory termination power with shutdown
- このページには、製造中止（生産終了）となった製品の情報が記載されています。本ページに記載されている仕様および情報は、過去の参考情報です。
The NE57811 is designed to provide power for termination of a Double Data Rate (DDR) SDRAM memory bus. It significantly reduces parts count, board space, and overall system cost compared to previous solutions.
The NE57811 DDR termination regulator maintains an output voltage (DDR reference bus voltage) that is one-half that of the RAM supply voltage. It is capable of providing up to +-3.5 A for sustained periods. Overcurrent limiting protects the NE57811 from inrush currents at start-up, and overtemperature shutdown protects the device in extreme temperature situations.
The SPAK-5 (SOT756) package is thermally robust for flexibility of thermal design. Because the NE57811 is a linear regulator, no external inductors or switching FETs are necessary. Fast response to load changes reduces the need for output capacitors.
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