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關於立錡 | 聯絡我們 |

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
TitleVersionLast UpdateDownload
RT9818: 電壓檢測器V11.02015/04/29
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 SampleDistributorStockBuy From Authorized Distributor
RT9818A-27GVSOT-233,000 Request Digikey 2,909 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818A-28GVSOT-233,000 Request Digikey 2,675 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818A-30GBSOT-253,000 Request Digikey 1,985 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818A-30GVSOT-233,000 Request Digikey 3,000 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818B-18GVSOT-233,000 Request Digikey 6,000 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818B-35GBSOT-253,000 Request Digikey 3,000 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-18GVSOT-233,000 Request Digikey 4,713 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-25GVSOT-233,000 Request Digikey 2,218 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-27GU3SC-70-33,000 Request Digikey 6,000 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-27GVSOT-233,000 Request Digikey 40,758 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-29GVSOT-233,000 Request Digikey 39,213 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-29GVLSOT-233,000 Request Digikey 3,000 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-30GVSOT-233,000 Request Digikey 8,817 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-30GVLSOT-233,000 Request Digikey 2,015 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-42GVSOT-233,000 Request Digikey 7,557 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818C-44GVSOT-233,000 Request Digikey 3,000 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818D-27GVSOT-233,000 Request Digikey 2,490 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818E-27GBSOT-253,000 Request Digikey 5,975 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818G-30GVLSOT-233,000 Request Digikey 2,972 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT9818G-33GVLSOT-233,000 Request Digikey 2,924 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
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