Overview
The TL431IDBVTE4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its high precision and thermal stability over a wide range of temperatures. The TL431IDBVTE4 is designed to provide a stable reference voltage and can be used in various applications such as on-board regulation, adjustable power supplies, and switching power supplies. It offers a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many scenarios.
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 | °C |
| Typical Temperature Drift | 6 mV (C Temp), 14 mV (I Temp, Q Temp) | mV |
| Output Impedance | 0.2 Ω (Typical) | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package | SOT-23 (DBV) | - |
| Pins | 5 | - |
Key Features
- Active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- 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 from 1 mA to 100 mA.
- Low output drift versus temperature, ensuring good stability over the entire temperature range.
- 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.
- Automotive, commercial, and military applications due to its specified thermal stability over a wide temperature range.
Q & A
- What is the TL431IDBVTE4 used for?
The TL431IDBVTE4 is used as a three-terminal adjustable shunt regulator in applications such as on-board regulation, adjustable power supplies, and switching power supplies.
- What is the adjustable output voltage range of the TL431IDBVTE4?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What are the temperature ranges for the TL431IDBVTE4?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL431IDBVTE4?
The typical output impedance is 0.2 Ω.
- What are the sink-current capabilities of the TL431IDBVTE4?
The device can sink current from 1 mA to 100 mA.
- How does the TL431IDBVTE4 compare to Zener diodes?
The TL431IDBVTE4 has active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What are the different grades of the TL431IDBVTE4?
The device is available in three grades with initial tolerances of 0.5% (B Grade), 1% (A Grade), and 2% (Standard Grade).
- What is the package type for the TL431IDBVTE4?
The device is packaged in a SOT-23 (DBV) package with 5 pins.
- What is the typical temperature drift of the TL431IDBVTE4?
The typical temperature drift is 6 mV (C Temp) and 14 mV (I Temp, Q Temp).
- Is the TL431IDBVTE4 suitable for automotive applications?
Yes, the device has specified thermal stability over applicable automotive, commercial, and military temperature ranges.
