Overview
The TL431AQDCKT is a three-terminal adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 series, known for its thermal stability over a wide range of temperatures, making it suitable for automotive, commercial, and military applications. The TL431AQDCKT is packaged in a SC70 (DCK) package, which is a surface-mount type, enhancing its usability in modern electronic designs.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SC70 (DCK) |
| Pins | 3 |
| Operating Temperature Range | -40°C to 125°C |
| Reference Voltage | Approximately 2.5V |
| Output Voltage Range | 2.5V to 36V |
| Output Impedance | Typically 0.2Ω |
| Sink-Current Capability | 1mA to 100mA |
| Reference Voltage Tolerance at 25°C | 0.5% (B Grade), 1% (A Grade), 2% (Standard Grade) |
| Power Dissipation | 950mW |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V, set by two external resistors.
- Reference voltage tolerance at 25°C: 0.5% (B Grade), 1% (A Grade), and 2% (Standard Grade).
- Operation from -40°C to 125°C, ensuring stability across various temperature ranges.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability ranging from 1mA to 100mA.
- Surface-mount packaging (SC70) for ease of integration.
Applications
- Shunt regulator: Ideal for on-board regulation and adjustable power supplies.
- Precision current limiter: Useful in applications requiring precise current control.
- Precision constant current sink: Suitable for applications needing a stable current sink.
- Isolated feedback loop for Switch Mode Power Supply (SMPS): Enhances the stability and efficiency of SMPS designs.
Q & A
- What is the TL431AQDCKT?
The TL431AQDCKT is a three-terminal adjustable precision shunt regulator produced by Texas Instruments. - What is the operating temperature range of the TL431AQDCKT?
The operating temperature range is from -40°C to 125°C. - What is the reference voltage of the TL431AQDCKT?
The reference voltage is approximately 2.5V. - How is the output voltage of the TL431AQDCKT adjusted?
The output voltage can be adjusted using two external resistors to any value between Vref (approximately 2.5V) and 36V. - What are the typical applications of the TL431AQDCKT?
Common applications include shunt regulation, precision current limiting, precision constant current sinking, and isolated feedback loops for SMPS. - What is the package type of the TL431AQDCKT?
The package type is SC70 (DCK), which is a surface-mount package. - What is the sink-current capability of the TL431AQDCKT?
The sink-current capability ranges from 1mA to 100mA. - What are the reference voltage tolerances available for the TL431AQDCKT?
The reference voltage tolerances are 0.5% (B Grade), 1% (A Grade), and 2% (Standard Grade) at 25°C. - How does the TL431AQDCKT handle temperature drift?
The device has a low temperature drift, ensuring good stability over the entire temperature range. - What is the power dissipation of the TL431AQDCKT?
The power dissipation is 950mW.
