Overview
The TL431BCLPM is an adjustable precision shunt regulator produced by Texas Instruments. This component is part of the TL431 series, known for its high accuracy and stability. The TL431BCLPM is housed in a TO-226-3 or TO-92-3 (TO-226AA) package with formed leads, making it suitable for a variety of applications requiring precise voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | TO-226-3, TO-92-3 (TO-226AA) | |
| Number of Pins | 3 | |
| Output Voltage Range | Vref to 36 V | V |
| Output Voltage Tolerance at 25°C | ±0.5% (B grade) | % |
| Sink Current Capability | 1 mA to 100 mA | mA |
| Maximum Input Voltage | 37 V | V |
| Minimum Output Voltage | 2.495 V | V |
| Temperature Coefficient | 34 ppm/°C | ppm/°C |
| Operating Ambient Temperature Range | 0°C to 70°C | °C |
| Output Impedance | 0.2 Ω (Typical) | Ω |
Key Features
- Adjustable Output Voltage: The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V using two external resistors.
- Precision Voltage Reference: Offers high accuracy with a voltage tolerance of ±0.5% at 25°C for the B grade.
- Low Output Impedance: Typical output impedance of 0.2 Ω, ensuring minimal voltage drop and high stability.
- Sink-Current Capability: Can sink currents from 1 mA to 100 mA, making it versatile for various applications.
- Low Dynamic Output Impedance: Exhibits a low dynamic impedance, which is beneficial for maintaining stability under varying conditions.
- Wide Operating Temperature Range: Operates from −40°C to 125°C, although the TL431BCLPM is specified for 0°C to 70°C.
Applications
- Digital Voltmeters: Used as a stable voltage reference in digital voltmeters due to its high precision and stability.
- Power Supplies: Ideal for on-board regulation and adjustable power supplies, including switching power supplies.
- Op Amp Circuitry: Can replace Zener diodes in op amp circuits, providing a more stable and adjustable voltage reference).
- General Voltage Regulation: Suitable for any application requiring a precise and adjustable shunt voltage regulator).
Q & A
- What is the package type of the TL431BCLPM?
The TL431BCLPM is housed in a TO-226-3 or TO-92-3 (TO-226AA) package with formed leads.
- What is the output voltage range of the TL431BCLPM?
The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V).
- What is the voltage tolerance at 25°C for the TL431BCLPM?
The voltage tolerance at 25°C is ±0.5% for the B grade).
- What is the sink-current capability of the TL431BCLPM?
The TL431BCLPM can sink currents from 1 mA to 100 mA).
- What is the typical output impedance of the TL431BCLPM?
The typical output impedance is 0.2 Ω).
- What is the operating ambient temperature range for the TL431BCLPM?
The operating ambient temperature range is 0°C to 70°C).
- Can the TL431BCLPM replace Zener diodes in some applications?
- What are some common applications of the TL431BCLPM?
- How does the TL431BCLPM achieve adjustable output voltage?
- What is the temperature coefficient of the TL431BCLPM?
