R3117N Series

Low Voltage Detector with SENSE Pin for Automotive Applications

[ NOTICE ] R3117xxx3A/C may cause the malfunction (miss detection), in the case of its VDD pin voltage changes very rapidly. Please see "Power Supply Injection Order" for details.


Data Sheet
Data Sheet

The R3117x is a CMOS-based voltage detector IC with high detector threshold accuracy and ultra-low supply current, which can be operated at an extremely low voltage and is used for system reset as an example.
The IC consists of a voltage reference unit, a comparator, resistors for detector threshold setting, an output driver and a hysteresis circuit. The detector threshold is fixed with high accuracy internally and does not require any adjustment.
The tolerance of the detector threshold is ±15mV (-VDET <= 1.5V) or ±1.0% (1.5V< -VDET). Since the sense pin is separated from the VDD pin of the IC, therefore, even if the sense pin voltage becomes to 0V, the output voltage keeps its "L" level.
Two output types, Nch open drain type and CMOS type are available. The R3117x supports the SOT-23-5 package.


Operating Voltage Range (Maximum Rating) 1.0V to 6.0V (7.0V)
Supply Current Typ. 0.29μA (VDD=6.0V)
* Not including the consumption current for SENSE pin.
Detector Threshold Range 0.7V to 5.0V (0.1V steps)
For other voltages, refer to MARK INFORMATIONS.
Accuracy Detector Threshold ±1.0% (-VDET => 1.6V), ±15mV (-VDET<1.6V)
Temperature-Drift Coefficient of Detector Threshold Typ. ±30ppm/°C
Output Types Nch Open Drain and CMOS
Package SOT-23-5
* Topt=25°C, unless otherwise noted.


  • 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
R3117N Series SOT-23-5 Reliability -AE Sn (Sn: 100%)
  • *1The composition of the product cannot be specified.

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