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RT9045 是簡易的、具有成本效益的高速線性穩壓器,設計用於生成符合 DDR 記憶體系統需求的匯流排終端電壓,具有 1.8A 電流吐納能力,輸出誤差在 20mV 以內。它的輸出電壓可以緊密跟蹤 VDDQ / 2,這只需要兩隻分壓電阻的配合;也可以強制性地在 REFEN 端加入希望的電壓,使之成為跟蹤的目標。RT9045 採用了高速差分放大器,可對輸入、負載的瞬變提供超快的回應。此外,它還具有初始片電壓偏移量極低、負載調節性能極好、雙向的電流限制和過熱關機保護等特性。
DDR VTT 應用的理想選擇
電流吐納能力:►DDRII 1.8A @ VIN = 1.8V ►DDRIII 1.5A @ VIN = 1.5V►LPDDRIII 1.2A @ VIN = 1.35V►DDRIV 1.2A @ VIN = 1.2V
集成功率 MOSFET
為 DDR 記憶體介面提供終端電壓
可配合陶瓷輸出電容穩定工作
全負載範圍內保持高精準度電壓輸出
週邊元件少
以高阻關機狀態支援 RAM 掛起功能
電流限制保護
過溫保護
符合 RoHS 規範,不含鹵素
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