Overview
The TL431IDBZTG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 series, known for its specified thermal stability over a wide range of temperatures, making it suitable for automotive, commercial, and military applications. The TL431IDBZTG4 allows for adjustable output voltage settings between approximately 2.5V and 36V using two external resistors. It features active output circuitry that provides a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (Vref) | approximately 2.5 | V |
| Adjustable Output Voltage Range | 2.495 to 36 | V |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Operating Temperature Range | -40 to 125°C | °C |
| Typical Temperature Drift | 6 mV (C temp), 14 mV (I temp, Q temp) | mV |
| Typical Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package | SOT-23 (DBZ) |
Key Features
- Adjustable output voltage from approximately 2.5V to 36V using two external resistors.
- Reference voltage tolerance at 25°C: 0.5% (B grade), 1% (A grade), 2% (Standard grade).
- Operation from -40°C to 125°C with specified thermal stability.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability from 1 mA to 100 mA.
- Active output circuitry with a sharp turn-on characteristic, making it a good replacement for Zener diodes.
- Low dynamic output impedance.
Applications
- On-board regulation and adjustable power supplies.
- Switching power supplies.
- Rack server power and industrial AC/DC power supplies.
- AC inverter and variable frequency (VF) drives.
- Servo drive control modules.
- Notebook PC power adapter designs.
- Battery management systems.
Q & A
- Q: What is the typical output voltage of the TL431IDBZTG4?
A: The TL431IDBZTG4 provides a typical output voltage of approximately 2.495V, which can be adjusted between 2.495V and 36V using external resistors. - Q: What are the typical applications of the TL431IDBZTG4?
A: The TL431IDBZTG4 is commonly used in precision voltage regulation, on-board regulation, adjustable power supplies, switching power supplies, and other applications requiring stable reference voltages. - Q: What is the operating temperature range of the TL431IDBZTG4?
A: The TL431IDBZTG4 operates from -40°C to 125°C. - Q: How is the output voltage adjusted on the TL431IDBZTG4?
A: The output voltage can be adjusted using two external resistors. - Q: What is the typical output impedance of the TL431IDBZTG4?
A: The typical output impedance is 0.2 Ω. - Q: What is the sink-current capability of the TL431IDBZTG4?
A: The sink-current capability ranges from 1 mA to 100 mA. - Q: Is the TL431IDBZTG4 suitable for replacing Zener diodes?
A: Yes, the TL431IDBZTG4 is an excellent replacement for Zener diodes due to its sharp turn-on characteristic and low output noise. - Q: What package type is the TL431IDBZTG4 available in?
A: The TL431IDBZTG4 is available in the SOT-23 (DBZ) package. - Q: What are the different grades of the TL431 series?
A: The TL431 series is available in three grades: B grade (0.5% tolerance), A grade (1% tolerance), and Standard grade (2% tolerance) at 25°C. - Q: How does the TL431IDBZTG4 ensure thermal stability?
A: The TL431IDBZTG4 ensures thermal stability through its specified thermal stability over applicable automotive, commercial, and military temperature ranges.
