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TL1431-Q1

ACTIVE

Automotive precision adjustable (programmable) shunt reference

Product details

VO (V) 2.5 Initial accuracy (max) (%) 0.4 VO adj (min) (V) 2.5 VO adj (max) (V) 36 Iz for regulation (min) (µA) 450 Reference voltage (V) adjustable Rating Automotive Temp coeff (max) (ppm/°C) 114 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 100
VO (V) 2.5 Initial accuracy (max) (%) 0.4 VO adj (min) (V) 2.5 VO adj (max) (V) 36 Iz for regulation (min) (µA) 450 Reference voltage (V) adjustable Rating Automotive Temp coeff (max) (ppm/°C) 114 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 100
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Qualified for Automotive Applications
  • 0.4% Initial Voltage Tolerance
  • 0.2-Ω Typical Output Impedance
  • Fast Turnon . . . 500 ns
  • Sink Current Capability . . . 1 mA to 100 mA
  • Low Reference Current (REF)
  • Adjustable Output Voltage . . . VI(ref) to 36 V

  • Qualified for Automotive Applications
  • 0.4% Initial Voltage Tolerance
  • 0.2-Ω Typical Output Impedance
  • Fast Turnon . . . 500 ns
  • Sink Current Capability . . . 1 mA to 100 mA
  • Low Reference Current (REF)
  • Adjustable Output Voltage . . . VI(ref) to 36 V

The TL1431 is a precision programmable reference with specified thermal stability over the automotive temperature range. The output voltage can be set to any value between VI(ref) (approximately 2.5 V) and 36 V with two external resistors (see Figure 16). This device has a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turnon characteristic, making the device an excellent replacement for Zener diodes and other types of references in applications such as onboard regulation, adjustable power supplies, and switching power supplies.

The TL1431Q is characterized for operation over the full automotive temperature range of –40°C to 125°C.

The TL1431 is a precision programmable reference with specified thermal stability over the automotive temperature range. The output voltage can be set to any value between VI(ref) (approximately 2.5 V) and 36 V with two external resistors (see Figure 16). This device has a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turnon characteristic, making the device an excellent replacement for Zener diodes and other types of references in applications such as onboard regulation, adjustable power supplies, and switching power supplies.

The TL1431Q is characterized for operation over the full automotive temperature range of –40°C to 125°C.

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* Data sheet TL1431-Q1 Precision Programmable Reference datasheet (Rev. B) 30 Apr 2008
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019

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