Overview
The TL431BQDBVT is an adjustable precision shunt regulator produced by Texas Instruments. This three-terminal device is part of the TL431 series, known for its thermal stability and adjustable output voltage. The TL431BQDBVT is packaged in a SOT-23 (DBV) package and is designed to operate over a wide temperature range, making it suitable for various applications including automotive, commercial, and military environments.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23 (DBV) |
| Number of Pins | 3 |
| Mounting Type | Surface Mount |
| Max Output Current | 100mA |
| Min Input Voltage | 2.495V |
| Max Input Voltage | 37V |
| Max Output Voltage | 36V |
| Tolerance | 0.5% (B grade) |
| Temperature Coefficient | 34ppm/°C |
| Cathode Current | 700µA |
| Operating Temperature Range | -40°C to 125°C |
| Output Impedance | 0.2Ω (typical) |
| RoHS Compliance | Yes |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Operation from -40°C to 125°C, ensuring stability over a wide temperature range.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
Applications
- On-board voltage regulation.
- Adjustable power supplies.
- Switching power supplies.
- Automotive, commercial, and military applications due to its wide operating temperature range.
Q & A
- What is the TL431BQDBVT?
The TL431BQDBVT is an adjustable precision shunt regulator produced by Texas Instruments.
- What package type does the TL431BQDBVT use?
The TL431BQDBVT is packaged in a SOT-23 (DBV) package.
- What is the maximum output current of the TL431BQDBVT?
The maximum output current is 100mA.
- What is the operating temperature range of the TL431BQDBVT?
The operating temperature range is from -40°C to 125°C.
- How can the output voltage of the TL431BQDBVT be 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 TL431BQDBVT?
Typical applications include on-board voltage regulation, adjustable power supplies, and switching power supplies.
- Is the TL431BQDBVT RoHS compliant?
- What is the tolerance of the TL431BQDBVT at 25°C?
The tolerance is 0.5% for the B grade.
- What is the typical output impedance of the TL431BQDBVT?
The typical output impedance is 0.2Ω.
- Can the TL431BQDBVT replace Zener diodes in some applications?
