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The RT9834 is a micro-power voltage detector with deglitched manual reset input supervising the power supply voltage level for microprocessors (μP) 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 3μA. The RT9834 performs supervisory function by sending out a reset signal whenever the VDD voltage falls below a preset threshold level. This reset signal will last the whole period before VDD recovering. Once VDD recovered upcrossing the threshold level, the reset signal will be released after a certain delay time. To pull reset signal low manually, just pull the manual reset input (MR) below the specified VIL level. The RT9834 is available in the SC-82 and
SOT-143 packages.

应用

  • Computers
  • Controllers
  • Intelligent Instruments
  • Critical μP and μC Power Monitoring
  • Portable/Battery-Powered Equipment
主要规格
RT9834A RT9834B RT9834C RT9834D RT9834E RT9834F RT9834G RT9834H
Status Active Active Active Active Active Active Active Active
Vin (min) (V) 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9
Vin (max) (V) 6 6 6 6 6 6 6 6
VTH (min) (V) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2
VTH (max) (V) 5 5 5 5 5 5 5 5
Accuracy (±%) 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Reset Active Type Low Low Low Low High High High High
Reset Time-out Period (typ) (ms) 0 55 220 450 0 55 220 450
Reset Delay Time (typ) (ms) 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02
Package Type SC-82;SOT-143 SC-82;SOT-143 SC-82;SOT-143 SC-82;SOT-143 SC-82;SOT-143 SC-82;SOT-143 SC-82;SOT-143 SC-82;SOT-143
关键特性
  • Internally Fixed Threshold 1.2V to 5V in 0.1V Step
  • High Accuracy ±1.5%
  • Low Supply Current 3μA
  • No External Components Required
  • Quick Reset within 20μs
  • Built-in Recovery Delay : 0ms, 55ms, 220ms, 450ms Options
  • Low Functional Supply Voltage 0.9V
  • CMOS Push-Pull Output
  • Small SC-82 and SOT-143 Packages
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateDownload
Micro-Power Voltage Detector with Manual Reset2013/02/19
库存实际状况请联系代理商或业务窗口
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