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The RT9833 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 1V to 5V, which covers most digital applications. It features low supply current of 3μA. The RT9833 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 RT9833 is available in the SC-82 package.

Applications

  • Computers
  • Controllers
  • Intelligent Instruments
  • Critical μP and μC Power Monitoring
  • Portable/Battery-Powered Equipment
Key Spec.
RT9833A RT9833B RT9833C RT9833D RT9833E RT9833F RT9833G RT9833H
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 SC-82 SC-82 SC-82 SC-82 SC-82 SC-82 SC-82
Features
  • Internally Fixed Threshold 1V 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
  • N-Channel Open-Drain Output
  • Small SC-82 Package
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateDownload
Micro-Power Voltage Detectors with Manual Reset2013/02/19
Please confirm with our distributor or sales representative for actual stock status.
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