TS431   Product is in volume production.

Low voltage adjustable shunt reference

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The TS431 is a low-voltage, three-terminal, adjustable shunt voltage reference. The output voltage can be set to any value between Vref (1.24 V) and 6 V using two external resistors. The TS431 is able to operate at a lower voltage (1.24 V) and lower cathode current than the widely-used TL431 and TL1431 shunt voltage reference. When driving an optocoupler, the TS431 is particularly suitable for regulating 3.3 V switching power supplies.

Key Features

  • AEC-Q100 qualified (SOT23-5)
  • Low voltage operation: 1.24 to 6 V
  • 2%, 1% and 0.5% voltage precision
  • Wide operating range cathode current: 60 μA to 30 mA
  • Low output impedance: 0.2 Ω
  • Typically stable for any capacitive loads
  • ESD protection:
  • Human body model: 2 kV
    • Machine model: 200 V
  • 100 ppm/°C temperature coefficient
  • Automotive grade version available

Resources

Technical Documentation

Product Specifications
Description Version Size
DS1254 DS1254: Adjustable shunt voltage reference IC (automotive for SOT23-5) 12.0 302 KB
Application Notes
Description Version Size
AN4172 AN4172: IEEE802.3af class 3 PoE converter reference design high efficiency flyback converter based on the PM8800A 1.0 598 KB

Publications and Collaterals

Selection Guides
Description Version Size
Linear and Switching Voltage Regulators Selection Guide 3.0 370 KB
Brochures
Description Version Size
Automotive Standard Analog Robustness and Performance 1.0 3 MB
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Sample & Buy

Part Number Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (US) Country of Origin More info Order from ST Order from Distributors
TS431AIYLT SOT23-5L Tape And Reel Active 0.24 1000 EAR99 MALAYSIA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431IZT TO-92 Tape And Reel Active 0.155 1000 EAR99 CHINA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431ILT SOT23-5L Tape And Reel Active 0.155 1000 EAR99 MALAYSIA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431AIZ-AP TO-92 Tape And Reel Active 0.162 1000 EAR99 CHINA MORE INFO Buy Direct Add to cart No availability reported, please contact our Sales office
TS431AILT SOT23-5L Tape And Reel Active 0.162 1000 EAR99 MALAYSIA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431IZ-AP TO-92 Tape And Reel Active 0.155 1000 EAR99 CHINA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431IZ TO-92 Poly Bag NRND 0.155 1000 EAR99 CHINA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431AIZ TO-92 Poly Bag Active 0.162 1000 EAR99 CHINA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431BIYLT SOT23-5L Tape And Reel Active 0.257 1000 EAR99 MALAYSIA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431BILT SOT23-5L Tape And Reel Active 0.161 1000 EAR99 MALAYSIA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
TS431IYLT SOT23-5L Tape And Reel Active 0.161 1000 EAR99 MALAYSIA MORE INFO Buy Direct Add to cart No availability reported, please contact our Sales office
TS431AIZT TO-92 Tape And Reel Active 0.162 1000 EAR99 CHINA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TS431AIYLT ActiveSOT23-5LAutomotiveEcopack2 0 0
TS431IZT ActiveTO-92IndustrialEcopack2 0 0
TS431ILT ActiveSOT23-5LIndustrialEcopack2 0 0
TS431AIZ-AP ActiveTO-92IndustrialEcopack2 0 0
TS431AILT ActiveSOT23-5LIndustrialEcopack2 0 0
TS431IZ-AP ActiveTO-92IndustrialEcopack2 0 0
TS431IZ NRNDTO-92IndustrialEcopack2 0 0
TS431AIZ ActiveTO-92IndustrialEcopack2 0 0
TS431BIYLT ActiveSOT23-5LAutomotiveEcopack2 0 0
TS431BILT ActiveSOT23-5LIndustrialEcopack2 0 0
TS431IYLT ActiveSOT23-5LAutomotiveEcopack2 0 0
TS431AIZT ActiveTO-92IndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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