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Product details

Parameters

VO (V) 2.5 Reference voltage Adjustable Initial accuracy (Max) (%) 0.4 Rating Automotive VO adj (Min) (V) 2.5 VO adj (Max) (V) 36 Iz for regulation (Min) (uA) 450 Temp coeff (Max) (ppm/ degree C) 114 Operating temperature range (C) -40 to 125 Iout/Iz (Max) (mA) 100 open-in-new Find other Shunt voltage references

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 open-in-new Find other Shunt voltage references

Features

  • 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

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Description

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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Technical documentation

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

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SOIC (D) 8 View options

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