Overview
The TL431BQDBZR is a three-terminal adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 family, known for its precision and versatility in voltage regulation. This device is packaged in a SOT-23 (DBZ) package and is designed to operate over a wide temperature range from -40°C to 125°C. The TL431BQDBZR is highly stable and can be used in various applications requiring precise voltage regulation.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TL431BQDBZR |
| Package | SOT-23 (DBZ) |
| Reference Voltage | 2.495V ±0.5% |
| Output Voltage Range | Vref to 36V |
| Maximum Output Current | 100mA |
| Operating Temperature Range | -40°C to 125°C |
| Typical Temperature Drift | 6mV (0°C to 70°C) |
| Output Impedance | 0.2Ω |
| Sink Current Capability | 1mA to 100mA |
| ESD Rating | Up to 17kV (Human Body Model) |
Key Features
- Programmable output voltage up to 36V using two external resistors.
- Three different reference voltage tolerances: 0.5% (B grade), 1% (A grade), and 2% (Standard grade).
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- AEC-Q100 qualified (grade 1) for automotive applications.
- Enhanced stability over a wide temperature range.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
Applications
- Shunt regulator.
- Precision current limiter.
- Precision constant current sink.
- Isolated feedback loop for Switch Mode Power Supplies (SMPS).
- On-board regulation and adjustable power supplies.
- Automotive, commercial, and military applications due to its specified thermal stability over a wide temperature range.
Q & A
- What is the TL431BQDBZR?
The TL431BQDBZR is a three-terminal adjustable shunt regulator from Texas Instruments.
- What is the operating temperature range of the TL431BQDBZR?
The operating temperature range is from -40°C to 125°C.
- What is the maximum output current of the TL431BQDBZR?
The maximum output current is 100mA.
- How is the output voltage of the TL431BQDBZR set?
The output voltage can be set using two external resistors between Vref (approximately 2.5V) and 36V.
- What are the reference voltage tolerances available for the TL431BQDBZR?
The reference voltage tolerances are 0.5% (B grade), 1% (A grade), and 2% (Standard grade).
- What is the typical output impedance of the TL431BQDBZR?
The typical output impedance is 0.2Ω.
- Is the TL431BQDBZR suitable for automotive applications?
- What are some common applications of the TL431BQDBZR?
- How does the TL431BQDBZR compare to Zener diodes?
- What is the package type of the TL431BQDBZR?
