Controllers | NCV8851-1

車載用平均電流モード・コントローラ

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NCV8851-1 は、調整可能出力、同期降圧コントローラで、デュアル N チャネル MOSFET を駆動し、高電力アプリケーションに最適です。広い入力電圧と出力電圧負荷範囲での超高速過渡応答と厳密なレギュレーションのために平均電流制御モードが採用されています。この IC は、内部固定 6.0 V 低ドロップアウト・リニア・レギュレータ (LDO) を搭載し、スイッチ・モード電源 (SMPS) のボトム・ゲートドライバに充電を供給して、過剰なゲート駆動への電力損失を制限します。この IC は、広い入力電圧範囲 (4.5 V ～ 40 V) での動作向けに設計され、500 kHz で 10 から 1 への電圧変換が可能です。追加コントローラ機能には、低電圧ロックアウト、内部ソフト・スタート、低静止電流スリープ・モード、プログラマブル周波数、SYNC 機能、平均電流制限、サイクル単位での過電流保護、サーマル・シャットダウンがあります。

  • Automotive systems requiring high current
  • Pre-regulated supply for low-voltage SMPSs and LDOs
  • Automotive systems
  • Average current mode control
  • 0.8 V 2% reference voltage
  • Wide input voltage range of 4.5 V to 40 V
  • 6.0 V low-dropout linear regulator (LDO)
  • Input UVLO (Undervoltage Lockout)
  • Internal soft-start
  • 1.0 µA maximum quiescent current in sleep mode
  • Adaptive non-overlap circuitry
  • Programmable fixed frequency 170 kHz to 500 kHz
  • External clock synchronization up to 600 kHz
  • Average current limiting (ACL)
  • Cycle-by-cycle overcurrent protection (OCP)
  • Thermal shutdown (TSD)

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