Overview
The TL431BCLPR is an adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its thermal stability and versatility in various applications. The TL431BCLPR is packaged in a TO-92 (LP) package with 3 pins and operates over a wide temperature range, making it suitable for automotive, commercial, and military uses.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TO-92 (LP) |
| Pins | 3 |
| Operating Temperature Range (°C) | 0 to 70 (C grade), -40 to 125 (Q grade) |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) |
| Adjustable Output Voltage | Vref (approximately 2.5V) to 36V |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) |
| Typical Output Impedance | 0.2Ω |
| Sink-Current Capability | 1mA to 100mA |
Key Features
- Adjustable output voltage settable between Vref (approximately 2.5V) and 36V using two external resistors.
- 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.
- Low output drift versus temperature, ensuring good stability over the entire temperature range.
Applications
The TL431BCLPR is versatile and can be used in various applications, including:
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Automotive, commercial, and military temperature ranges.
Q & A
- What is the package type of the TL431BCLPR?
The TL431BCLPR is packaged in a TO-92 (LP) package with 3 pins. - What is the operating temperature range of the TL431BCLPR?
The operating temperature range varies by grade: 0°C to 70°C (C grade), -40°C to 85°C (I grade), and -40°C to 125°C (Q grade). - What is the reference voltage tolerance of the TL431BCLPR at 25°C?
The reference voltage tolerance is 0.5% (B grade), 1% (A grade), and 2% (Standard grade). - How is the output voltage of the TL431BCLPR adjusted?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors. - What is the typical output impedance of the TL431BCLPR?
The typical output impedance is 0.2Ω. - What is the sink-current capability of the TL431BCLPR?
The sink-current capability ranges from 1mA to 100mA. - Can the TL431BCLPR replace Zener diodes in some applications?
Yes, the TL431BCLPR can replace Zener diodes due to its active output circuitry and sharp turn-on characteristic. - In what types of power supplies can the TL431BCLPR be used?
The TL431BCLPR can be used in on-board regulation, adjustable power supplies, and switching power supplies. - What are the typical temperature drift values for the TL431BCLPR?
The typical temperature drift values are 6mV (C temp) and 14mV (I temp, Q temp). - Is the TL431BCLPR suitable for military applications?
Yes, the TL431BCLPR is suitable for military temperature ranges.
