Home Power management Voltage references Shunt voltage references
Home
Power management
Voltage references
Shunt voltage references

TL1431-SP

ACTIVE

Radiation-hardened QMLV, 2.4-V to 36-V adjustable shunt voltage reference

Order now
Data sheet

TL1431-SP

ACTIVE
Data sheet Order now

Product details

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 Space Temp coeff (max) (ppm/°C) 114 Operating temperature range (°C) -55 to 125 Iout/Iz (max) (mA) 100
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 Space Temp coeff (max) (ppm/°C) 114 Operating temperature range (°C) -55 to 125 Iout/Iz (max) (mA) 100
CDIP (JG) 8 64.032 mm² 9.6 x 6.67 CFP (U) 10 139.36 mm² 21.44 x 6.5
  • QMLV qualified to 100-krad(Si) RHA, 5962R99620
  • 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
  • QMLV qualified to 100-krad(Si) RHA, 5962R99620
  • 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 automotive, commercial, and military temperature ranges. The output voltage can be set to any value between VI(ref) (approximately 2.5 V) and 36 V with two external resistors. 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 TL1431 is characterized for operation over the full military temperature range of –55°C to 125°C.

The TL1431 is a precision programmable reference with specified thermal stability over automotive, commercial, and military temperature ranges. The output voltage can be set to any value between VI(ref) (approximately 2.5 V) and 36 V with two external resistors. 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 TL1431 is characterized for operation over the full military temperature range of –55°C to 125°C.
filter Find other Shunt voltage references
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 18
Type Title Date
* Data sheet TL1431-SP Class V, Precision Programmable Reference datasheet (Rev. C) PDF | HTML 30 Nov 2020
* Radiation & reliability report TL1431-SP Neutron Displacement Damage (NDD) Report PDF | HTML 17 Aug 2023
* SMD TL1431-SP SMD 5962-99620 08 Jul 2016
* Radiation & reliability report TL1431-RHA TID Report 12 Nov 2014
Application brief DLA Approved Optimizations for QML Products (Rev. A) PDF | HTML 05 Jun 2024
Selection guide TI Space Products (Rev. J) 12 Feb 2024
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A) 31 Aug 2023
Application note QML flow, its importance, and obtaining lot information (Rev. C) 30 Aug 2023
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. A) PDF | HTML 17 Nov 2022
Application note Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 19 Oct 2022
Application brief Analog Front-End Design With Texas Instruments’ Tooling Landscape PDF | HTML 07 Mar 2022
Application note Space-Grade, 100-krad, Linear Thermoelectric Cooler (TEC) Driver Circuit (Rev. A) PDF | HTML 11 Jan 2022
Circuit design Space-Grade, 100-krad, Window Comparator Circuit PDF | HTML 13 Apr 2021
Circuit design Space-Grade, 50-krad, 1.25-V, Low-Noise Voltage Reference Circuit PDF | HTML 19 Oct 2020
Application note DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 21 Aug 2020
Application note Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form PDF | HTML 18 May 2020
Application note Failure Containment in Spacecraft Point-of-Load Power Supplies 30 Apr 2020
E-book Radiation Handbook for Electronics (Rev. A) 21 May 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Request
Reference designs

PMP22680 — 40-W, ±15-V flyback with magnetic feedback reference design

This reference design generates an isolated ±15 V at 40 W from a 70-V to 120-V DC input voltage. The design uses a magnetic feedback circuit to replace the function of an optocoupler.
Test report: PDF
Reference designs

PMP23033 — 40-W 5-V single-switch forward converter with magnetic feedback reference design

This reference design generates an isolated 5-V at 40-W from a 60-V to 120-V DC-input voltage. The design uses a magnetic feedback circuit to replace the function of an optocoupler.
Test report: PDF
Package Pins CAD symbols, footprints & 3D models
CDIP (JG) 8 Ultra Librarian
CFP (U) 10 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos