R3151 Series
36V Input Voltage Detector with Detect and Release Delay Function or SENSE pin

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  • Description

    The R3151 Series are CMOS-based 36V input voltage detector ICs. Since the maximum input voltage of R3151 is 36V (absolute maximum rating: 50V) and R3151 has high voltage accuracy and low supply current, it is suitable for car battery voltage supervisor.

    There are two versions: A/B versions provide VDD pin detection and E/F versions provide SENSE pin detection. Detector threshold and Release voltage can be specified separately. Both the detector threshold accuracy and the release voltage accuracy are ±1.5%.

    The detect output delay time and the release output delay time (Power-on Reset Time) can be set by a pin. The output types are Nch open drain "L" output and Nch open drain "H" output. SOT-23-6 package is available.

  • Spec
    Operating Voltage Range R3151NxxxA/B: 1.4 V to 36.0 V (50.0 V)
    R3151NxxxE/F: 3.6 V to 6.0 V (7.0 V)
    Operating Temperature Range -40°C to 105°C (150°C)
    Supply Current R3151NxxxA/B: Typ. 3.8 µA
    R3151NxxxE/F: Typ. 3.5 µA
    Detector Threshold Range 5.0 V to 10.0 V (0.1 V step)
    Detector Threshold Accuracy ±1.5% (Ta = 25°C)
    ±2.0% (-40°C to 105°C)
    Release Voltage Range 5.3 V to 11.0 V (0.1 V step)
    Release Voltage Accuracy ±1.5% (25°C)
    ±2.0% (-40°C to 105°C)
    Release Delay Time Accuracy -35% to 40% (-40°C to 105°C)
    Output Type Nch Open Drain
    Package SOT-23-6
    Detection Delay Time Accuracy -35% to 40% (-40°C to 105°C)
  • Technical
    • R3151NxxxA/B Typical Application

      R3151NxxxA/B Typical Application

    • R3151NxxxE/F Typical Application

      R3151NxxxE/F Typical Application

    • R3151NxxxA Timing Chart

      R3151NxxxA Timing Chart

    • R3151NxxxB Timing Chart

      R3151NxxxB Timing Chart

    • R3151NxxxE Timing Chart

      R3151NxxxE Timing Chart

    • R3151NxxxF Timing Chart

      R3151NxxxF Timing Chart

  • 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    • Please contact us or our distributors for unpublished reliability information.

Download Datasheet

Functional Description

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Category:Voltage Detectors (Reset ICs)

Features Release Voltage Setting
min (V)
max (V)
Delay Time
min (V)
max (V)