Overview
The TL431ACDBVTE4, produced by Texas Instruments, is a three-terminal adjustable shunt regulator. This device is part of the TL431 series, known for its thermal stability across various temperature ranges, including automotive, commercial, and military applications. The TL431ACDBVTE4 allows for adjustable output voltage settings between approximately 2.5V (Vref) and 36V using two external resistors. It features active output circuitry that provides a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Adjustable Output Voltage | Vref to 36V | V |
| Operating Temperature Range | −40°C to 125°C (Q grade), −40°C to 85°C (I grade), 0°C to 70°C (C grade) | °C |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | mV |
| Typical Output Impedance | 0.2Ω | Ω |
| Sink-Current Capability | 1mA to 100mA | mA |
| Package | SOT-23-5 (DBV) |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Operation from −40°C to 125°C, depending on the grade (C, I, Q).
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- Sharp turn-on characteristic, making it suitable as a replacement for Zener diodes.
- Available in three grades with different initial tolerances: 0.5% (B grade), 1% (A grade), and 2% (Standard grade).
Applications
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Replacement for Zener diodes in various applications.
Q & A
- What is the TL431ACDBVTE4 used for?
The TL431ACDBVTE4 is used as a three-terminal adjustable shunt regulator, often replacing Zener diodes in applications such as on-board regulation, adjustable power supplies, and switching power supplies.
- What is the adjustable output voltage range of the TL431ACDBVTE4?
The output voltage can be adjusted between approximately 2.5V (Vref) and 36V using two external resistors.
- What are the different grades of the TL431 series?
The TL431 series is available in three grades with initial tolerances of 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- What is the typical output impedance of the TL431ACDBVTE4?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431ACDBVTE4?
The sink-current capability ranges from 1mA to 100mA.
- What are the operating temperature ranges for the TL431ACDBVTE4?
The operating temperature ranges are −40°C to 125°C (Q grade), −40°C to 85°C (I grade), and 0°C to 70°C (C grade).
- What package types are available for the TL431ACDBVTE4?
The TL431ACDBVTE4 is available in the SOT-23-5 (DBV) package.
- How does the TL431ACDBVTE4 compare to Zener diodes?
The TL431ACDBVTE4 has a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What is the typical temperature drift of the TL431ACDBVTE4?
The typical temperature drift is 6mV (C temp) and 14mV (I temp, Q temp).
- Is the TL431ACDBVTE4 suitable for military applications?
