Overview
The TL431AIDBZRG4 is a precision programmable shunt voltage reference produced by Texas Instruments. This device features a typical output voltage of 2.495V, which can be adjusted using two external resistors to set the output voltage up to 36V. It is known for its low dynamic output impedance and is widely used in various precision voltage regulation applications, including battery management systems and switching power supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VO (Typical Output Voltage) | 2.495 | V |
| Initial Accuracy (Max) | 0.5%, 1%, 2% | % |
| VO Adj (Min/Max) | 2.495 / 36 | V |
| Iz for Regulation (Min) | 400 | µA |
| Operating Temperature Range | -40 to 125°C | °C |
| Iout/Iz (Max) | 100 | mA |
| Temperature Coefficient (Max) | 92 | ppm/°C |
| Output Impedance (Typical) | 0.2Ω | Ω |
| Package/Case | SOT23-3 | - |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Low dynamic output impedance of 0.2Ω.
- Low output noise.
- Sink-current capability: 1mA to 100mA.
- Three grades of initial tolerance: 0.5%, 1%, and 2% at 25°C.
- Operation from -40°C to 125°C.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
Applications
- Precision voltage regulation.
- Battery management systems.
- Switching power supplies.
- On-board regulation.
- Adjustable power supplies.
Q & A
- Q: What is the typical output voltage of the TL431AIDBZRG4?
A: The TL431AIDBZRG4 provides a typical output voltage of 2.495V, which can be adjusted as per the application's requirements using external resistors. - Q: What are the typical applications of the TL431AIDBZRG4?
A: The TL431AIDBZRG4 is commonly used in precision voltage regulation, battery management systems, and switching power supplies to provide stable and accurate reference voltages. - Q: How is the output voltage of the TL431AIDBZRG4 adjusted?
A: The output voltage can be adjusted using two external resistors. - Q: What is the operating temperature range of the TL431AIDBZRG4?
A: The operating temperature range is from -40°C to 125°C. - Q: What is the typical output impedance of the TL431AIDBZRG4?
A: The typical output impedance is 0.2Ω. - Q: What are the different grades of initial tolerance available for the TL431AIDBZRG4?
A: The device is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C. - Q: Can the TL431AIDBZRG4 replace Zener diodes in some applications?
A: Yes, the TL431AIDBZRG4 can replace Zener diodes due to its active output circuitry and sharp turn-on characteristic. - Q: What is the sink-current capability of the TL431AIDBZRG4?
A: The sink-current capability ranges from 1mA to 100mA. - Q: Is the TL431AIDBZRG4 lead-free?
A: Yes, the TL431AIDBZRG4 is a lead-free device. - Q: What is the package type of the TL431AIDBZRG4?
A: The package type is SOT23-3.
