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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
Featured Videos
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| TS431AILT |
Active
|
SOT23-5L | Industrial | Ecopack2 | |
| TS431AIYLT |
Active
|
SOT23-5L | Automotive | Ecopack2 | |
| TS431AIZ |
Active
|
TO-92 | Industrial | Ecopack2 | |
| TS431AIZ-AP |
Active
|
TO-92 | Industrial | Ecopack2 | |
| TS431AIZT |
Active
|
TO-92 | Industrial | Ecopack2 | |
| TS431BILT |
Active
|
SOT23-5L | Industrial | Ecopack2 | |
| TS431BIYLT |
Active
|
SOT23-5L | Automotive | Ecopack2 | |
| TS431ILT |
Active
|
SOT23-5L | Industrial | Ecopack2 | |
| TS431IYLT |
Active
|
SOT23-5L | Automotive | Ecopack2 | |
| TS431IZ |
NRND
|
TO-92 | Industrial | Ecopack2 | |
| TS431IZ-AP |
Active
|
TO-92 | Industrial | Ecopack2 | |
| TS431IZT |
Active
|
TO-92 | Industrial | Ecopack2 |
(**) 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.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| TS431AIYLT | 2 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | MALAYSIA | 0.24 / 1k | |
| TS431IZT | 1 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | TO-92 | -40 | 125 | CHINA | 0.155 / 1k | |
| TS431ILT | 7 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | MALAYSIA | 0.155 / 1k | |
| TS431AIZ-AP | No availability of distributors reported, please contact our sales office | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | TO-92 | -40 | 125 | CHINA | 0.162 / 1k | |
| TS431AILT | 7 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | MALAYSIA | 0.162 / 1k | |
| TS431IZ-AP | No availability of distributors reported, please contact our sales office |
Active
|
EAR99 | NEC | Tape And Reel | TO-92 | -40 | 125 | CHINA | 0.155 / 1k | ||
| TS431IZ | No availability of distributors reported, please contact our sales office | Buy now |
NRND
|
EAR99 | NEC | Poly Bag | TO-92 | -40 | 125 | CHINA | 0.155 / 1k | |
| TS431AIZ | No availability of distributors reported, please contact our sales office | Buy now |
Active
|
EAR99 | NEC | Poly Bag | TO-92 | -40 | 125 | CHINA | 0.162 / 1k | |
| TS431BIYLT | 4 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | MALAYSIA | 0.257 / 1k | |
| TS431BILT | 6 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | MALAYSIA | 0.161 / 1k | |
| TS431IYLT | 1 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT23-5L | -40 | 125 | MALAYSIA | 0.161 / 1k | |
| TS431AIZT | No availability of distributors reported, please contact our sales office | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | TO-92 | -40 | 125 | CHINA | 0.162 / 1k | |
Marketing Status
ActiveECCN (US)
EAR99Budgetary Price (US$)*/Qty
0.155 / 1k(*) 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