R3121 Series
36V Input Voltage Detector with Release Delay Function

Package1
Package1

Description

R3121 is the 36 V Maximum Input Voltage Detector (Maximum Rating: 50 V). Selectable options of VDD Pin Detection Type (R3121NxxxA), SENSE Pin Detection Type (R3121NxxxE) and VDD Pin Detection without Hysteresis Type (R3121NxxxG), depending on the system configurations.

Key Benefits

  • Highly accurate voltage detection with detector threshold accuracy ±1.5% (Ta = 25°C)
  • Selectable options of VDD Pin Detection, SENSE Pin Detection and VDD Pin Detection without Hysteresis
  • Adjustment of the release delay time (Power-on Reset Time) by connecting external capacitors
  • Reduction of mounting area by using compact package of SOT-23-6

Spec

Standard Industrial Automotive
Operating Voltage Range R3121NxxxA/G: 1.4 V to 36.0 V (50.0V)
R3121NxxxE: 2.4 V to 6.0 V (7.0V)
Operating Temperature Range -40°C to 85°C (125°C) -40°C to 125°C (150°C) -40°C to 125°C (150°C)
Supply Current R3121NxxxA/G: Typ. 3.8 µA
R3121NxxxE: Typ. 3.5 µA
Detector Threshold Range 3.0 V to 12.0 V (0.1 V step)
Detector Threshold Accuracy ±1.5% (Ta = 25°C)
±2.0% (-40°C ≤ Ta ≤ 85°C)
±1.5% (Ta = 25°C)
-2.2 to 2.5% (-40°C ≤ Ta ≤ 125°C)
±1.5% (Ta = 25°C)
-2.2 to 2.5% (-40°C ≤ Ta ≤ 125°C)
Release Delay Time Accuracy -35% to 40% (-40°C ≤ Ta ≤ 85°C) -40% to 80% (-40°C ≤ Ta ≤ 125°C) -40% to 80% (-40°C ≤ Ta ≤ 125°C)
Output Type Nch Open Drain
Package SOT-23-6

Download Datasheet

Search for similar products under conditions below.

Category:Voltage Detectors (Reset ICs)

VIN
min (V)
1.4
VIN
max (V)
36.0
Release
Delay Time
Adjustable
VDET
min (V)
3.0
VDET
max (V)
12.0

Technical Documents

Quality & Packages

  • Refer to the datasheets for the details on the product.
  • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

FAQ

Buy / Contact

  • Purchase, Request for samples and documents
    Sales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
  • Available from 1 piece!
    Our electronic device products are available through our authorized online distributors.
  • Technical Support