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The TS4431 is a four-terminal device dedicated to low voltage Switch Mode Power Supplies (SMPS).
It integrates a 1.224V voltage reference, an amplifier, and an open collector output transistor in a single package. The TS4431’s operating mode is similar to the well-known standard voltage reference, the TL431. It maintains the desired feedback voltage at the REF pin in a closed loop configuration by sinking a current proportional to the error voltage at the REF pin.
TS4431 features an open collector transistor with an ultra-low saturation voltage, allowing it to be used in series with the optocoupler in an SMPS architecture to regulate low voltage SMPS.Key Features
- Internal 1.224V ±0.5% precision
- Low current consumption: 250 µA
- Low output saturation voltage 75 mV max between SINK and GND
- 100ppm/ËšC temperature coefficient
- Industrial temperature range: -40 to +85ËšC
Sample & Buy
| Part Number | Package | Packing Type | Marketing Status | Budgetary Price (US$)* | Quantity | ECCN (US) | Country of Origin | Order from Distributors | Order from ST |
|---|---|---|---|---|---|---|---|---|---|
| TS4431AILT | SOT23-5L | Tape And Reel |
Active
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0.32 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now |
| TS4431ILT | SOT23-5L | Tape And Reel |
Active
|
0.305 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now |
(*) 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
Featured Videos
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| TS4431AILT |
Active
|
SOT23-5L | Industrial | Ecopack2 |
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| TS4431ILT |
Active
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SOT23-5L | Industrial | Ecopack2 |
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TS4431AILT
Package:
SOT23-5LMaterial Declaration**:
TS4431ILT
Package:
SOT23-5LMaterial Declaration**:
(**) 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.
