Precision Adjustable (Programmable) Shunt Reference - TL1431

TL1431 (ACTIVE)

Precision Adjustable (Programmable) Shunt Reference

Description

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 (see ). 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 TL1431C is characterized for operation over the commercial temperature range of 0°C to 70°C. The TL1431Q is characterized for operation over the full automotive temperature range of –40°C to 125°C. The TL1431M is characterized for operation over the full military temperature range of –55°C to 125°C.

Features

  • 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

View more

Parametrics Compare all products in Shunt Voltage Reference

 
Reference Voltage
VO Adj (Min) (V)
VO Adj (Max) (V)
Initial Accuracy (Max) (%)
Min Iz for Regulation (uA)
Iout/Iz (Max) (mA)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TL1431
Adjustable    
2.5    
36    
0.4    
450    
150    
Catalog    
-40 to 125
0 to 70    
3TO-92
8SOIC
8TSSOP    
0.14 | 1ku    

Other qualified versions of TL1431

Version Part Number Definition
Space TL1431-SP Radiation tolerant, ceramic packaging and qualified for use in Space-based application
Enhanced Product TL1431-EP Supports Defense, Aerospace and Medical Applications
Military TL1431M QML certified for Military and Defense Applications
Automotive TL1431-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

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