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The RT9818 is a micro-power voltage detector designed to supervise the power supply voltage levels for microprocessors (μP) or digital systems. It provides internally fixed threshold levels with 0.1V increments, ranging from 1.2V to 5V, covering most digital applications. The device features a low supply current of 3μA. The RT9818 performs supervisory function by sending out a reset signal whenever the VDD voltage falls below a preset threshold level. This reset signal persists until VDD recovers and surpasses the threshold level, at which point the reset signal is released after a certain delay time. The RT9818 is available in SC-82, SC-70-3, SOT-23-3, SOT-23-5, and SOT-89 packages. The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.

應用

  • Desktop/Notebook Computers
  • Critical μP and μC Power Monitoring
  • Portable/Battery-Powered Equipment
  • Controllers
Datasheet
TitleVersionLast UpdateDownload
RT9818: Micro-Power Voltage DetectorV12.02024/11/13
Technical Documents
TitleItem TypeLast UpdateDownload
Power Management for Video Doorbell App. Note2021/10/08
Part NumberPackage TypePackage Qty.DistributorStockBuy From Authorized Distributor
RT9818A-27GVSOT-233,000 Digikey 0 Lead-Time: 14 weeks
2,903 Last Time Buy
2026/12/31
RT9818A-28GVSOT-233,000 Digikey 0 Lead-Time: 14 weeks
2,947 Last Time Buy
2026/12/31
RT9818A-30GBSOT-253,000 Digikey 0 Lead-Time: 14 weeks
75 Last Time Buy
2026/12/31
RT9818B-18GVSOT-233,000 Digikey 5,901 Last Time Buy
2026/12/31
0 Lead-Time: 14 weeks
RT9818B-35GBSOT-253,000 Digikey 0 Lead-Time: 14 weeks
2,941 Last Time Buy
2026/12/31
RT9818C-18GVSOT-233,000 Digikey 0 Lead-Time: 14 weeks
2,620 Last Time Buy
2026/12/31
RT9818C-25GVSOT-233,000 Digikey 0 Lead-Time: 14 weeks
2,984 Last Time Buy
2026/12/31
RT9818C-27GU3SC-70-33,000 Digikey 3,585 Last Time Buy
2026/12/31
0 Lead-Time: 14 weeks
RT9818C-27GVSOT-233,000 Digikey 0 Lead-Time: 14 weeks
2,552 Last Time Buy
2026/12/31
RT9818C-29GVLSOT-233,000 Digikey 0 Lead-Time: 14 weeks
38 Last Time Buy
2026/12/31
RT9818C-30GVLSOT-233,000 Digikey 320 Last Time Buy
2026/12/31
2,372 Last Time Buy
2026/12/31
RT9818C-42GVSOT-233,000 Digikey 0 Lead-Time: 14 weeks
1,169 Last Time Buy
2026/12/31
RT9818C-44GVSOT-233,000 Digikey 0 Lead-Time: 14 weeks
2,970 Last Time Buy
2026/12/31
RT9818D-27GVSOT-233,000 Digikey 0 Lead-Time: 14 weeks
2,890 Last Time Buy
2026/12/31
RT9818E-27GBSOT-253,000 Digikey 0 Lead-Time: 14 weeks
11,097 Last Time Buy
2026/12/31
RT9818G-30GVLSOT-233,000 Digikey 0 Lead-Time: 14 weeks
2,947 Last Time Buy
2026/12/31
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