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LM4431

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Micropower shunt voltage reference

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Data sheet

LM4431

ACTIVE
Data sheet Order now

Product details

VO (V) 2.5 Initial accuracy (max) (%) 2 VO adj (min) (V) 2.5 VO adj (max) (V) 2.5 Iz for regulation (min) (µA) 100 Reference voltage (V) Fixed Rating Catalog Operating temperature range (°C) 0 to 70 Iout/Iz (max) (mA) 15
VO (V) 2.5 Initial accuracy (max) (%) 2 VO adj (min) (V) 2.5 VO adj (max) (V) 2.5 Iz for regulation (min) (µA) 100 Reference voltage (V) Fixed Rating Catalog Operating temperature range (°C) 0 to 70 Iout/Iz (max) (mA) 15
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Small Package: SOT-23
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Fixed Reverse Breakdown Voltage of 2.50V

Key Specifications

  • Output Voltage Tolerance: 25°C: ±2.0% (Max)
  • Low Output Noise (10 Hz to 10 kHz): 35 μVrms (Typ)
  • Wide Operating Current Range: 100 μA to 15 mA
  • Commercial Temperature Range: 0 to +70 °C
  • Low Temperature Coefficient: 30 ppm/°C (Typ)

All trademarks are the property of their respective owners.

  • Small Package: SOT-23
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Fixed Reverse Breakdown Voltage of 2.50V

Key Specifications

  • Output Voltage Tolerance: 25°C: ±2.0% (Max)
  • Low Output Noise (10 Hz to 10 kHz): 35 μVrms (Typ)
  • Wide Operating Current Range: 100 μA to 15 mA
  • Commercial Temperature Range: 0 to +70 °C
  • Low Temperature Coefficient: 30 ppm/°C (Typ)

All trademarks are the property of their respective owners.

Ideal for space critical applications, the LM4431 voltage reference is available in the sub-miniature (3 mm x 1.3 mm) SOT-23 surface-mount package. The LM4431's advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4431 easy to use. The operating current range is 100 μA to 15 mA.

The LM4431 utilizes fuse and zener-zap reverse breakdown voltage trim during wafer sort to ensure that the parts have an accuracy of better than ±2.0% at 25°C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents.

Ideal for space critical applications, the LM4431 voltage reference is available in the sub-miniature (3 mm x 1.3 mm) SOT-23 surface-mount package. The LM4431's advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4431 easy to use. The operating current range is 100 μA to 15 mA.

The LM4431 utilizes fuse and zener-zap reverse breakdown voltage trim during wafer sort to ensure that the parts have an accuracy of better than ±2.0% at 25°C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents.
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* Data sheet LM4431 Micropower Shunt Voltage Reference datasheet (Rev. C) 08 Apr 2013
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019

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SHUNT_VOLTAGE_REFERENCE_RESISTOR_CALCULATOR — Shunt voltage reference external resistor quick-start calculator

This external resistor quick-start calculator tool lets you easily calculate valid external resistor values relative to voltage reference, supply and load-current bounds. With these inputs, you can instantly view the resulting calculations and use the color-coded indications to understand (...)
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SOT-23 (DBZ) 3 View options
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