R3154 Series
42 V Input Window Voltage Detector with Diagnostic Function

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  • Description

    The R3154 is a Window Voltage Detector suitable for functional safety requirement. This device monitors over-and-under output voltages from the power supply IC for a microprocessor and a sensor, and detects abnormal voltage of systems. Its undervoltage detection down to 0.55 V is suitable for low power devices. Also, operation check of voltage detection is available with the TEST pin.

    • Power supply from battery enables the voltage detector to operate independently from the power source.
    • High-accuracy over-and-undervoltage detection from -1.25% to 0.75% and the hysteresis of Max. 0.75%.
    • Overvoltage detection: 0.75 V at minimum, Undervoltage detection: 0.55 V at minimum.
    • Compact package of SOT-23-6. Safe and secure adjacent pin configuration to prevent a short circuit.

  • Spec
    Consumer Industrial Automotive
    Operating Voltage Range 3.0 V to 42.0 V (50.0 V)
    Operating Temperature Range -40°C to 105°C (125°C) -40°C to 125°C (150°C) -40°C to 125°C (150°C)
    Supply Current Typ. 2.0 µA
    Overvoltage Detection 0.75 V to 3.70 V (0.01 V step)
    Undervoltage Detection 0.55 V to 3.30 V (0.01 V step)
    Detector Threshold Accuracy ±0.5% (Ta = 25°C)
    -1.25% to 0.75% (–40°C ≤ Ta ≤ 105°C)
    ±0.5% (Ta = 25°C)
    -1.25% to 0.75% (–40°C ≤ Ta ≤ 125°C)
    ±0.5% (Ta = 25°C)
    -1.25% to 0.75% (–40°C ≤ Ta ≤ 125°C)
    Detection Release Hysteresis Typ. 0.5%
    Release Delay Time Typ. 4 ms (CD = 0.01 µF)
    Output Type Nch Open Drain
    Package SOT-23-6
  • Technical
    • Typical Application

      Typical Application

  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
    • Please contact us or our distributors for unpublished reliability information.

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Functional Description

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Category:Voltage Detectors (Reset ICs)

Features Window Detector,Diagnostic Function
min (V)
max (V)
Delay Time
min (V)
max (V)