Overview
The TL431BCLPE3 is an adjustable precision shunt regulator produced by Texas Instruments. It is part of the TL431 series, which includes three-terminal adjustable shunt regulators known for their thermal stability across various temperature ranges. These devices are designed to replace Zener diodes in many applications, offering a sharp turn-on characteristic and low output noise. The TL431BCLPE3 is available in the TO-92-3 package and is characterized by its high precision and adjustable output voltage capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade) |
| Adjustable Output Voltage | Vref (approximately 2.5V) to 36V |
| Operating Temperature Range | −40°C to 125°C |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) |
| Output Impedance | 0.2Ω (typical) |
| Sink-Current Capability | 1mA to 100mA |
| Package | TO-92-3 |
Key Features
- Adjustable output voltage settable between Vref (approximately 2.5V) and 36V using two external resistors.
- High thermal stability over automotive, commercial, and military temperature ranges.
- Low output noise and typical output impedance of 0.2Ω.
- 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 regulation.
- Adjustable power supplies.
- Switching power supplies.
- Replacement for Zener diodes in various applications.
Q & A
- What is the TL431BCLPE3? The TL431BCLPE3 is an adjustable precision shunt regulator produced by Texas Instruments.
- What is the reference voltage tolerance of the TL431BCLPE3 at 25°C? The reference voltage tolerance is 0.5% for the B grade.
- What is the adjustable output voltage range of the TL431BCLPE3? The output voltage can be set between Vref (approximately 2.5V) and 36V.
- What is the operating temperature range of the TL431BCLPE3? The operating temperature range is from −40°C to 125°C.
- What is the typical output impedance of the TL431BCLPE3? The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431BCLPE3? The sink-current capability ranges from 1mA to 100mA.
- In what package is the TL431BCLPE3 available? The TL431BCLPE3 is available in the TO-92-3 package.
- What are some common applications of the TL431BCLPE3? Common applications include on-board regulation, adjustable power supplies, and switching power supplies.
- Can the TL431BCLPE3 replace Zener diodes? Yes, the TL431BCLPE3 is designed to replace Zener diodes in many applications due to its sharp turn-on characteristic.
- What are the different grades of the TL431 series? The TL431 series is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
