Overview
The TL431AQDBVRG4 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 TL431AQDBVRG4 offers adjustable output voltage, low output noise, and a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in various power supply and regulation applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23-5 (DBV) | |
| Pins | 5 | |
| Operating Temperature Range | -40 to 125 | °C |
| Reference Voltage Tolerance at 25°C | 1% (A Grade) | |
| Adjustable Output Voltage | Vref (approximately 2.5V) to 36V | V |
| Typical Output Impedance | 0.2Ω | Ω |
| Sink-Current Capability | 1mA to 100mA | mA |
| Typical Temperature Drift | 6mV (C Temp), 14mV (I Temp, Q Temp) | mV |
| Low Output Noise | Yes |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using 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, making it suitable for a wide range of applications.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- Active output circuitry with a sharp turn-on characteristic, ideal for replacing Zener diodes.
Applications
- On-board regulation and voltage reference.
- Adjustable power supplies and switching power supplies.
- Automotive, commercial, and military applications due to its thermal stability over a wide temperature range.
- Any application requiring a precise and adjustable voltage reference.
Q & A
- What is the TL431AQDBVRG4?
The TL431AQDBVRG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the operating temperature range of the TL431AQDBVRG4?
The operating temperature range is from -40°C to 125°C.
- What are the reference voltage tolerances available for the TL431 series?
The reference voltage tolerances are 0.5% (B Grade), 1% (A Grade), and 2% (Standard Grade) at 25°C.
- How is the output voltage of the TL431AQDBVRG4 adjusted?
The output voltage can be adjusted using two external resistors and can be set to any value between Vref (approximately 2.5V) and 36V.
- What is the typical output impedance of the TL431AQDBVRG4?
The typical output impedance is 0.2Ω.
- What are the sink-current capabilities of the TL431AQDBVRG4?
The sink-current capability ranges from 1mA to 100mA.
- Is the TL431AQDBVRG4 suitable for replacing Zener diodes?
Yes, it is suitable due to its active output circuitry and sharp turn-on characteristic.
- What are some common applications of the TL431AQDBVRG4?
Common applications include on-board regulation, adjustable power supplies, switching power supplies, and various automotive, commercial, and military applications.
- What package type is the TL431AQDBVRG4 available in?
The TL431AQDBVRG4 is available in the SOT-23-5 (DBV) package.
- Does the TL431AQDBVRG4 have low output noise?
Yes, it has low output noise.
- What is the typical temperature drift of the TL431AQDBVRG4?
The typical temperature drift is 6mV (C Temp) and 14mV (I Temp, Q Temp).
