Product overview
Description
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.
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All features
- Internal 1.224V ±0.5% precision
- Low current consumption: 250 µA
- Low output saturation voltage 75 mV max between SINK and GND
- 100ppm/˚C temperature coefficient
- Industrial temperature range: -40 to +85˚C
EDA Symbols, Footprints and 3D Models
STMicroelectronics - TS4431
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| TS4431AILT | Active | SOT23-5L | Industrial | Ecopack2 | |
| TS4431ILT | Active | SOT23-5L | 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 | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| TS4431AILT | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| TS4431ILT | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
TS4431AILT Active
TS4431ILT Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors