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 | |
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.
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 | |||||||||||
| TS4431AILT | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | SOT23-5L | -40 | 85 | MALAYSIA | | ||
| TS4431ILT | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | SOT23-5L | -40 | 85 | MALAYSIA | | ||
(*) 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