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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
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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 | Package | Packing Type | Marketing Status | ECCN (US) | Country of Origin | Budgetary Price (US$)*/Qty | |
|---|---|---|---|---|---|---|---|---|---|
| TS431AIYLT | 2 distributors | Buy now | SOT23-5L | Tape And Reel | Active | EAR99 | MALAYSIA | 0.24 / 1k | |
| TS431IZT | 1 distributors | Buy now | TO-92 | Tape And Reel | Active | EAR99 | CHINA | 0.155 / 1k | |
| TS431ILT | 6 distributors | Buy now | SOT23-5L | Tape And Reel | Active | EAR99 | MALAYSIA | 0.155 / 1k | |
| TS431AIZ-AP | No availability of distributors reported, please contact our sales office | Buy now | TO-92 | Tape And Reel | Active | EAR99 | CHINA | 0.162 / 1k | |
| TS431AILT | 5 distributors | Buy now | SOT23-5L | Tape And Reel | Active | EAR99 | MALAYSIA | 0.162 / 1k | |
| TS431IZ-AP | No availability of distributors reported, please contact our sales office | TO-92 | Tape And Reel | Active | EAR99 | CHINA | 0.155 / 1k | ||
| TS431IZ | No availability of distributors reported, please contact our sales office | Buy now | TO-92 | Poly Bag | NRND | EAR99 | CHINA | 0.155 / 1k | |
| TS431AIZ | No availability of distributors reported, please contact our sales office | Buy now | TO-92 | Poly Bag | Active | EAR99 | CHINA | 0.162 / 1k | |
| TS431BIYLT | 4 distributors | Buy now | SOT23-5L | Tape And Reel | Active | EAR99 | MALAYSIA | 0.257 / 1k | |
| TS431BILT | 6 distributors | Buy now | SOT23-5L | Tape And Reel | Active | EAR99 | MALAYSIA | 0.161 / 1k | |
| TS431IYLT | No availability of distributors reported, please contact our sales office | Buy now | SOT23-5L | Tape And Reel | Active | EAR99 | MALAYSIA | 0.161 / 1k | |
| TS431AIZT | No availability of distributors reported, please contact our sales office | Buy now | TO-92 | Tape And Reel | Active | EAR99 | CHINA | 0.162 / 1k |
TS431IZ-AP
Package
TO-92Packing Type
Tape And ReelBudgetary Price (US$)*/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
