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RT9818 是用於微處理器( MCU )和數位系統供電監控的微功耗電壓檢測器,擁有在 1.2V~5V 範圍內的、以 0.1V 為間距的固定電壓檢測閾值,可滿足絕大多數數位系統的需求。RT9818 的電流消耗僅為 3μA,它通過在電源電壓 VDD 低於其電壓檢測閾值時輸出重定信號來完成電壓監控功能。在 VDD 低於電壓檢測閾值期間,重定信號將持續有效,並在 VDD 上升超過電壓檢測閾值之後持續並延遲預定的時間之後釋放。RT9818 可以 SC-82、SC-70-3、SOT-23-3、SOT-23-5和 SOT-89 等封裝形式供貨。

應用

  • 電腦
  • 控制器
  • 智慧型儀器器
  • 關鍵 μP 和 μC 的電源監控
  • 可擕式、電池供電設備
主要規格
RT9818A RT9818B RT9818C RT9818D RT9818E RT9818F RT9818G
Status Active Active Active Active Active Active Active
Vin (min) (V) 0.9 0.9 0.9 0.9 0.9 0.9 0.9
Vin (max) (V) 6 6 6 6 6 6 6
VTH (min) (V) 1.2 1.2 1.2 1.2 1.2 1.2 1.2
VTH (max) (V) 5 5 5 5 5 5 5
Accuracy (±%) 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Reset Active Type Low(Open Drain) Low Low Low High High High
Reset Time-out Period (typ) (ms) 0 55 220 450 0 55 220
Reset Delay Time (typ) (ms) 0.02 0.02 0.02 0.02 0.02 0.02 0.02
Package Type SOT-23;SOT-25;SC-70-3;SC-82;SOT-89 SOT-23;SOT-25;SC-70-3;SC-82;SOT-89 SOT-23;SOT-25;SC-70-3;SC-82;SOT-89 SOT-23;SOT-25;SC-70-3;SC-82;SOT-89 SOT-23;SOT-25;SC-70-3;SC-82;SOT-89 SOT-23;SOT-25;SC-70-3;SC-82;SOT-89 SOT-23;SOT-25;SC-70-3;SC-82;SOT-89
關鍵特性
  • 內部固定的電壓檢測閾值,範圍: 1.2V~5V;間距: 0.1V
  • 電壓檢測精度: ±1.5%
  • 低電流消耗: 3μA
  • 無外部元件需求
  • 快速復位時間: 20μs
  • 內建延時選項: 0ms、55ms、220ms、450ms
  • 低啟動電壓: 0.9V
  • N 溝道 MOSFET 開漏輸出
  • 小型 SC-82, SC-70-3, SOT-23-3, SOT-23-5, SOT-89 封裝
  • 符合 RoHS 規範,完全無鉛
Datasheet
TitleLast UpdateDownload
電壓檢測器2008/10/28
Technical Documents
TitleItem TypeLast UpdateDownload
立錡全系列產品選擇指南 [Jan., 2024] Selection Guide2024/01/19
Power Management for Video Doorbell App. Note2021/10/08
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9818A-27GVSOT-233000 Request Buy from Distributor
RT9818A-28GVSOT-233000 Request Buy from Distributor
RT9818A-30GBSOT-253000 Request Buy from Distributor
RT9818A-30GVSOT-233000 Request Buy from Distributor
RT9818B-35GBSOT-253000 Request Buy from Distributor
RT9818C-18GVSOT-233000 Request Buy from Distributor
RT9818C-25GVSOT-233000 Request Buy from Distributor
RT9818C-27GVSOT-233000 Request Buy from Distributor
RT9818C-29GVSOT-233000 Request Buy from Distributor
RT9818C-29GVLSOT-233000 Request Buy from Distributor
RT9818C-30GVSOT-233000 Request Buy from Distributor
RT9818C-30GVLSOT-233000 Request Buy from Distributor
RT9818C-42GVSOT-233000 Request Buy from Distributor
RT9818C-44GVSOT-233000 Request Buy from Distributor
RT9818D-27GVSOT-233000 Request Buy from Distributor
RT9818E-27GBSOT-253000 Request Buy from Distributor
RT9818G-30GVLSOT-233000 Request Buy from Distributor
RT9818G-33GVLSOT-233000 Request Buy from Distributor
RT9818B-18GVSOT-233000 Request Buy from Distributor
RT9818C-27GU3SC-70-33000 Request Buy from Distributor
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