Overview
The TL431QDBVRE4, produced by Texas Instruments, is a three-terminal adjustable shunt regulator. This device is part of the TL431 series, known for its specified thermal stability across various temperature ranges, including automotive, commercial, and military environments. The TL431QDBVRE4 offers adjustable output voltage, low output noise, and high stability, making it an excellent choice for a variety of applications such as on-board regulation, adjustable power supplies, and switching power supplies.
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 36 V | V |
| Operating Temperature Range | -40°C to 125°C | °C |
| Typical Temperature Drift | 6 mV (C temp), 14 mV (I temp, Q temp) | mV |
| Typical Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package Type | SOT-23-5 (DBV) | |
| Package Size | 2.90 mm × 1.60 mm | mm |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability ranging from 1 mA to 100 mA.
- Operation over a wide temperature range from -40°C to 125°C.
- Three different reference voltage tolerances: 0.5% (B grade), 1% (A grade), and 2% (Standard grade).
- AEC-Q100 qualified (grade 1) for automotive applications.
- Low output drift versus temperature, ensuring good stability over the entire temperature range.
Applications
- Rack server power supplies.
- Industrial AC/DC power supplies.
- AC inverter and variable frequency (VF) drives.
- Servo drive control modules.
- Notebook PC power adapter designs.
- On-board regulation and adjustable power supplies.
- Switching power supplies.
Q & A
- What is the TL431QDBVRE4?
The TL431QDBVRE4 is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431QDBVRE4?
The output voltage can be adjusted from Vref (approximately 2.5V) to 36V using two external resistors.
- What are the reference voltage tolerances available for the TL431QDBVRE4?
The device 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 operating temperature range of the TL431QDBVRE4?
The device operates from -40°C to 125°C.
- What is the typical output impedance of the TL431QDBVRE4?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431QDBVRE4?
The sink-current capability ranges from 1 mA to 100 mA.
- Is the TL431QDBVRE4 suitable for automotive applications?
- What are some common applications of the TL431QDBVRE4?
- What package type is the TL431QDBVRE4 available in?
The TL431QDBVRE4 is available in the SOT-23-5 (DBV) package.
- What is the size of the SOT-23-5 package?
The SOT-23-5 package measures 2.90 mm × 1.60 mm.
