Controllers | KA7552A

PWM コントローラ (プログラム可能な最大周波数 600khz)

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KA7552A/KA7553A は広い動作周波数範囲に適したスイッチング電源制御 IC です。内部回路にはパルス電流制限によるパルス、保護、外部トリガによるオン/オフ制御、低スタンバイ電流、ソフト・スタート、およびパワー MOSFET を駆動するための高電流トーテムポール出力があります。最大デューティは KA7552A が 70% で KA7553A が 46% です。デューティが最大の時、ピン 2 およびピン 8 の入力閾値電圧は KA7552A と KA7553A で異なります。

  • その他のコンシューマーエレクトロニクス
  • 内蔵ドライブ回路、直接接続パワーMOSFET (lO = ±1.5A) 用
  • 広い動作周波数範囲 (5KHz - 600KHz)
  • パルスバイパルス過電流制限
  • 過負荷保護
  • 外部トリガーによるオン/オフ制御
  • 内部UVLO
  • 低静止時電流 (通常90uA)
  • ソフトスタート回路

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