Overview
The TL431CDBVTE4 is a precision programmable reference voltage regulator produced by Texas Instruments. It is part of the TL431 and TL432 series, which are three-terminal adjustable shunt regulators known for their high accuracy and thermal stability. These devices are designed to operate over a wide temperature range, making them suitable for various applications including automotive, commercial, and military environments.
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 (approximately 2.5V) 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 |
| Typical Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Output Noise | Low | - |
Key Features
- High accuracy and thermal stability over a wide temperature range.
- Adjustable output voltage from approximately 2.5V to 36V using two external resistors.
- Low output impedance of 0.2 Ω.
- Sink-current capability from 1 mA to 100 mA.
- Low output noise.
- Active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
Applications
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Automotive, commercial, and military applications due to its wide operating temperature range.
Q & A
- What is the TL431CDBVTE4?
The TL431CDBVTE4 is a precision programmable reference voltage regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431CDBVTE4?
The output voltage can be set to any value between approximately 2.5V and 36V using two external resistors.
- What are the operating temperature ranges for the TL431CDBVTE4?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL431CDBVTE4?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431CDBVTE4?
The sink-current capability ranges from 1 mA to 100 mA.
- What are some common applications of the TL431CDBVTE4?
Common applications include on-board regulation, adjustable power supplies, and switching power supplies.
- How does the TL431CDBVTE4 compare to Zener diodes?
The TL431CDBVTE4 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 TL431 series?
The TL431 series is available in three grades: B Grade (0.5% tolerance), A Grade (1% tolerance), and Standard Grade (2% tolerance) at 25°C.
- What is the typical temperature drift of the TL431CDBVTE4?
The typical temperature drift is 6 mV for C Temp and 14 mV for I Temp and Q Temp.
- Is the TL431CDBVTE4 suitable for automotive applications?
Yes, it is suitable for automotive applications due to its wide operating temperature range and specified thermal stability.
