R3134N Series

Low Voltage Detector with Built-in Delay Circuit for Automotive Applications


Data Sheet
Data Sheet

R3134x is a CMOS-based voltage detector ICs with built-in delay circuit, high detector threshold accuracy, and ultra low supply current, which can operate at low voltage.
The IC can be used as system reset generators, and each of these ICs consists of a voltage reference, a comparator, and resistors for setting voltage detector threshold, an output driver transistor, manual reset circuit, and an output delay generator.
Detector threshold is fixed internally with high accuracy and requires no adjustment. When a supply voltage crosses a setting detector threshold voltage from a high value to a lower value, this IC generates reset signal.
R3134x outputs "L" at its detect.
Since R3134x embeds an output delay generator, during a setting 240ms delay time, which is fixed in the IC, this IC keeps the reset condition after they are released. Released conditions will be kept for the delay time from when a supply voltage crosses a setting detector threshold voltage from a low value to a higher value, or from when the manual reset signal is released. Two output types of Nch open drain type and CMOS type are available.
R3134x supports a SOT-23-5 package.


Operating Voltage Range (Maximum Rating) 0.75V to 6.0V (6.5V)
Supply Current Typ. 0.8µA (R3134x27Ex, VDD=3.0V)
Detector Threshold Range 1.0V to 5.0V (0.1V steps)
Further, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V, and 4.63V can be provided as standard.
Detector Threshold Accuracy ±1.8%
Temperature-Drift Coefficient of Detector Threshold Typ. ±100ppm/°C
Built-in Delay Time Circuit Typ. 240ms
Output Delay Time Accuracy ±15%
Output Types Nch Open Drain and CMOS
Package SOT-23-5


  • Power source for car accessories including car audio equipment, car navigation system, and ETC system.

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Data Sheet Package Quality Assurance Data Suffix Composition & Content*1
R3134N Series SOT-23-5 Reliability -AE Sn (Sn: 100%)
  • *1The composition of the product cannot be specified.

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