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Manufacturer Part #


SPX2431 Series 2.5 V 0.5 % Precision Adj. Shunt Voltage Regulator - SOT-23-3

ECAD Model:
Mfr. Name: MaxLinear
Standard Pkg:
Product Variant Information section
Date Code: 2148
Product Specification Section
MaxLinear SPX2431AM-L/TR - Technical Attributes
Attributes Table
Shunt Type: Shunt
Output Type: Adjustable
Accuracy: ±0.5%
Reference Voltage: 2.5V
Output Voltage: 2.5V to 20V
Output Impedance: 0.15Ω
Output Current: 1mA to 100mA
Power Dissipation: 0.2W
Operating Temp Range: 0°C to 105°C
Package Style:  SOT-23 (SC-59,TO-236)
Mounting Method: Surface Mount
$Features & Applications

The SPX2431AM-L/TR is a 3-terminal adjustable shunt voltage regulatorproviding a highly accurate bandgap reference. The SPX2431 acts as an open-looperror amplifier with a 2.5 V temperature compensation reference. The SPX2431’sthermal stability, wide operating current (100 mA) and temperature range (0°C to105°C) makes it suitable for a variety of applications that require a low cost,high performance solution

The SPX2431A tolerance of 0.5% is proven to be sufficient to overcome all ofthe other errors in the system to virtually eliminate the need for trimming inthe power supply manufacturer's assembly line and contribute a significant costsavings. The output voltage may be adjusted to any value between VREF and 20volts with two external resistors. In the standard shunt configuration, thecombination of a low temperature coefficient, sharp turn on characteristics, lowoutput impedance, and programmable output voltage makes this precision referencean excellent error amplifier


  • Trimmed Bandgap to 0.5% and 1.0%
  • Wide Operating Current 1 mA to 100 mA
  • Extended Temp. Range: 0°C to 105°C
  • Low Temperature Coefficient 30 ppm/°C
  • Offered in 3 Pin SOT-23 (M)
  • Replacement for TL431, AS2431
  • Low Noise Output


  • Battery Operating Equipment
  • Adjustable Supplies
  • Switching Power Supplies
  • Error Amplifiers
  • Single Supply Amplifier
  • Monitors / VCRs / TVs
  • Personal Computers
Pricing Section
Global Stock:
Factory Stock:Factory Stock:
Factory Lead Time:
52 Weeks
Minimum Order:
Multiple Of:
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Product Variant Information section