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The RT9819 is a micro-power voltage detector supervising the power supply voltage level for microprocessors (&mu;P) or digital systems. It provides internally fixed threshold levels with 0.1V per step ranging from 1.2V to 5V, which covers most digital applications. It features low supply current of 3&mu;A. The RT9819 performs supervisory function by sending out a reset signal whenever the V<sub>DD</sub> voltage falls below a preset threshold level. This reset signal will last the whole period before V<sub>DD</sub> recovering. Once V<sub>DD</sub> recovered upcrossing the threshold level, the reset signal will be released after a certain delay time. The RT9819 is provided in SC-70-3, SC-82, SOT-23-3 and WDFN-6L 1.6x1.6 packages.
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  • 1.2V~5V 固定的内部阈值，级差 0.1V
  • ±1.5% 精度
  • 无需使用外部元件
  • 20μs 以内的快速复位输出
  • 内建恢复延时选项：0ms, 55ms, 200ms, 450ms
  • 800ns 手动复位输入去抖动时间
  • 功能有效工作电压：0.9V
  • CMOS 推挽输出
  • SC-70-2, SC-82, SOT-23-3 和 WDFN-6L 1.6x1.6 封装
  • 符合 RoHS 规范，不含卤素
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计算机 控制器 智能仪器 关键 &mu;P 和 &mu;C 的电源监控 便携式、电池供电设备
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