Overview
The TL431QDBVTE4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 series, known for its specified thermal stability over a wide range of temperatures, making it suitable for automotive, commercial, and military applications. The TL431QDBVTE4 offers adjustable output voltage, low output noise, and a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in various power supply and regulation applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23-5 (DBV) |
| Pins | 5 |
| Operating Temperature Range (°C) | -40 to 125 |
| 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 |
| Mounting Type | Surface Mount |
Key Features
- Programmable output voltage up to 36V with two external resistors.
- Three different reference voltage tolerances: 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- Operation from -40°C to 125°C, making it suitable for a wide range of applications.
- Active output circuitry with a sharp turn-on characteristic, ideal for replacing Zener diodes.
Applications
- On-board regulation and voltage reference applications.
- Adjustable power supplies and switching power supplies.
- Automotive, commercial, and military temperature range applications.
- Replacement for Zener diodes in various power supply circuits.
Q & A
- What is the TL431QDBVTE4?
The TL431QDBVTE4 is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the operating temperature range of the TL431QDBVTE4?
The operating temperature range is from -40°C to 125°C.
- What are the reference voltage tolerances available for the TL431QDBVTE4?
The device is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- How is the output voltage of the TL431QDBVTE4 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 TL431QDBVTE4?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431QDBVTE4?
The sink-current capability ranges from 1mA to 100mA.
- Is the TL431QDBVTE4 suitable for automotive applications?
- What type of packaging does the TL431QDBVTE4 come in?
The device comes in a SOT-23-5 (DBV) package.
- Can the TL431QDBVTE4 replace Zener diodes in power supply circuits?
- What are some common applications of the TL431QDBVTE4?
