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SPX1431 - Precision Adjustable Shunt Regulator

General Description

The SPX1431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate bandgap reference.

The SPX1431 acts as an open-loop error amplifier with a 2.5V temperature compensation reference.

Key Features

  • Trimmed Bandgap Reference to 0.4%.
  • Wide Operating Current 1mA to 150mA.
  • -55°C to 125°C Extended Temperature Range.
  • 30 ppm/°C Low Temperature Coefficient.
  • Improved Replacement in Performance for LT1431.
  • Low Cost Solution.
  • Offered in SOIC-8 and SOT-89.

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SPX1431 Precision Adjustable Shunt Regulator April 2013 GENERAL DESCRIPTION The SPX1431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate bandgap reference. The SPX1431 acts as an open-loop error amplifier with a 2.5V temperature compensation reference. The SPX1431's thermal stability, wide operating current (150mA) and temperature range (-55°C to 125°C) makes it suitable for a variety of applications that require a low cost, high performance solution. SPX1431 tolerance of 0.4% is proven to be sufficient to overcome all of the other errors in the system to virtually eliminate the need for trimming in the power supply manufacturer's assembly lines and contributes a significant cost savings.