Overview
The TL431BIDBVRE4 is a three-terminal adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its high accuracy and thermal stability. The TL431BIDBVRE4 is particularly useful in applications requiring adjustable output voltages and high precision voltage regulation. It operates over a wide temperature range and is available in various packages, making it versatile for different design needs.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B Grade) | |
| Adjustable Output Voltage | Vref to 36V | Set with two external resistors |
| Operating Temperature Range | −40°C to 125°C | |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | |
| Output Impedance | 0.2Ω Typical | |
| Sink-Current Capability | 1mA to 100mA | |
| Package | SOT-23-5 (DBV) |
Key Features
- High Accuracy: The TL431BIDBVRE4 offers high precision voltage regulation with a reference voltage tolerance of 0.5% at 25°C.
- Adjustable Output Voltage: The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- Low Output Noise: The device features low output noise, making it suitable for applications requiring stable voltage regulation.
- Low Output Impedance: A typical output impedance of 0.2Ω ensures minimal voltage drop and efficient current handling.
- Wide Operating Temperature Range: The device operates from −40°C to 125°C, making it suitable for various environmental conditions.
- Sharp Turn-On Characteristic: Active output circuitry provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
Applications
- On-Board Regulation: Suitable for on-board voltage regulation in various electronic systems.
- Adjustable Power Supplies: Ideal for use in adjustable power supplies where precise voltage control is necessary.
- Switching Power Supplies: Used in switching power supplies to provide stable and regulated output voltages.
- Automotive, Commercial, and Military Applications: The device's thermal stability and wide operating temperature range make it suitable for use in automotive, commercial, and military applications.
Q & A
- What is the reference voltage tolerance of the TL431BIDBVRE4 at 25°C?
The reference voltage tolerance of the TL431BIDBVRE4 at 25°C is 0.5% (B Grade).
- How can the output voltage of the TL431BIDBVRE4 be adjusted?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What is the operating temperature range of the TL431BIDBVRE4?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL431BIDBVRE4?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431BIDBVRE4?
The sink-current capability ranges from 1mA to 100mA.
- What package types are available for the TL431BIDBVRE4?
The TL431BIDBVRE4 is available in the SOT-23-5 (DBV) package.
- Why is the TL431BIDBVRE4 a good replacement for Zener diodes?
The device provides a very sharp turn-on characteristic and active output circuitry, making it an excellent replacement for Zener diodes in many applications.
- What are some common applications of the TL431BIDBVRE4?
Common applications include on-board regulation, adjustable power supplies, switching power supplies, and various automotive, commercial, and military applications.
- How does the TL431BIDBVRE4 handle temperature drift?
The device features low output drift versus temperature, with typical temperature drift values of 6mV (C temp) and 14mV (I temp, Q temp).
- Is the TL431BIDBVRE4 suitable for high-noise environments?
The device features low output noise, making it suitable for applications requiring stable voltage regulation even in high-noise environments.
