Overview
The TL431BQDBZR is a three-terminal adjustable precision shunt regulator produced by Texas Instruments. It is part of the TL431 family, known for its high accuracy and stability. This component is designed to provide a programmable output voltage range from 2.495V to 36V, set by two external resistors. It is widely used in various applications requiring precise voltage regulation.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TL431BQDBZR |
| Package | SOT-23 |
| Number of Pins | 3 |
| Mounting | Surface Mount |
| Reference Voltage | 2.495V to 36V |
| Reference Voltage Tolerance | ±0.5% |
| Output Current | 100mA |
| Operating Temperature Range | -40°C to 125°C |
| Cathode Current | 700µA (min) |
| Temperature Coefficient | 34ppm/°C |
| Power Dissipation | 950mW |
| Output Impedance | 0.5Ω |
| RoHS Compliance | Yes |
Key Features
- Programmable output voltage up to 36V, set by two external resistors.
- High accuracy with a reference voltage tolerance of ±0.5%.
- Wide operating temperature range from -40°C to 125°C.
- Low output impedance of 0.5Ω.
- Maximum output current of 100mA.
- Compact SOT-23 package.
Applications
- Shunt regulator.
- Precision current limiter.
- Precision constant current sink.
- Isolated feedback loop for Switch Mode Power Supply (SMPS).
Q & A
- What is the TL431BQDBZR used for? The TL431BQDBZR is used as a shunt regulator, precision current limiter, precision constant current sink, and in isolated feedback loops for Switch Mode Power Supplies (SMPS).
- What is the reference voltage range of the TL431BQDBZR? The reference voltage range is from 2.495V to 36V.
- What is the maximum output current of the TL431BQDBZR? The maximum output current is 100mA.
- What is the operating temperature range of the TL431BQDBZR? The operating temperature range is from -40°C to 125°C.
- Is the TL431BQDBZR RoHS compliant? Yes, the TL431BQDBZR is RoHS compliant.
- What is the package type of the TL431BQDBZR? The package type is SOT-23.
- What is the tolerance of the reference voltage? The tolerance of the reference voltage is ±0.5%.
- What is the typical cathode current of the TL431BQDBZR? The typical cathode current is 700µA.
- What is the temperature coefficient of the TL431BQDBZR? The temperature coefficient is 34ppm/°C.
- How is the output voltage of the TL431BQDBZR set? The output voltage is set by two external resistors.
