Texas Instruments
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TL431BIDBVR
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TL431BIDBVR

Product Overview

  • Category: Integrated Circuit
  • Use: Voltage Reference
  • Characteristics: Adjustable Precision Shunt Regulator
  • Package: SOT-23 (Small Outline Transistor)
  • Essence: Programmable Precision Reference
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Reference Voltage Range: 2.495V to 36V
  • Output Current: 1mA to 100mA
  • Temperature Range: -40°C to +85°C
  • Accuracy: ±1%
  • Line Regulation: 0.2% typical
  • Load Regulation: 0.4% typical
  • Cathode Current: 1mA to 100mA
  • Anode Current: 10µA typical
  • Dynamic Impedance: 0.22Ω typical

Detailed Pin Configuration

The TL431BIDBVR has three pins:

  1. Anode (A): Connected to the reference voltage input.
  2. Cathode (K): Connected to the ground or negative supply.
  3. Reference (R): Provides the regulated output voltage.

Functional Features

  • Programmable output voltage with a wide range of options.
  • High accuracy and stability over temperature and time.
  • Low dynamic impedance for improved regulation.
  • Low operating current for reduced power consumption.
  • Fast response time to changes in input voltage.

Advantages and Disadvantages

Advantages

  • Wide range of adjustable output voltages.
  • High precision and stability.
  • Low power consumption.
  • Small package size for space-constrained applications.
  • Fast response to input voltage changes.

Disadvantages

  • Limited output current capability.
  • Requires external components for proper operation.
  • Sensitivity to noise and voltage spikes.

Working Principles

The TL431BIDBVR is a precision shunt regulator that operates by comparing the reference voltage at the cathode pin with an external voltage divider network connected to the anode pin. By adjusting the resistors in the voltage divider, the output voltage can be set to a desired value within the specified range. The TL431BIDBVR then regulates the current flowing through the cathode pin to maintain a stable output voltage.

Detailed Application Field Plans

The TL431BIDBVR is commonly used in various applications, including:

  1. Voltage regulation in power supplies and battery chargers.
  2. Precision voltage references for analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
  3. Current limiting circuits for protecting sensitive components.
  4. Overvoltage protection circuits.
  5. Temperature compensation circuits.
  6. LED driver circuits.

Detailed and Complete Alternative Models

  • TL431ACDBZR
  • TL431AIDBZR
  • TL431BQDBZR
  • TL431CDBZR
  • TL431IDBZR

These alternative models offer similar functionality and performance characteristics to the TL431BIDBVR and can be used as drop-in replacements in many applications.

In conclusion, the TL431BIDBVR is a versatile integrated circuit that serves as an adjustable precision shunt regulator. With its wide range of adjustable output voltages, high accuracy, and stability, it finds applications in various fields such as power supplies, voltage references, and current limiting circuits. While it has limitations in terms of output current capability and sensitivity to noise, there are alternative models available that offer similar features.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TL431BIDBVR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TL431BIDBVR:

  1. Q: What is TL431BIDBVR? A: TL431BIDBVR is a programmable precision voltage reference integrated circuit (IC) that can be used in various technical solutions.

  2. Q: What is the purpose of TL431BIDBVR? A: TL431BIDBVR is commonly used as a voltage reference or shunt regulator in electronic circuits to provide stable and accurate voltage levels.

  3. Q: What is the voltage range of TL431BIDBVR? A: The voltage range of TL431BIDBVR is typically from 2.5V to 36V, making it suitable for a wide range of applications.

  4. Q: How does TL431BIDBVR work? A: TL431BIDBVR works by comparing the input voltage with an internal reference voltage and adjusting its output accordingly to maintain a constant voltage level.

  5. Q: Can TL431BIDBVR be used as a voltage regulator? A: Yes, TL431BIDBVR can be used as a voltage regulator by connecting it in a feedback loop with an external transistor or MOSFET to control the output voltage.

  6. Q: What are the typical applications of TL431BIDBVR? A: TL431BIDBVR is commonly used in power supplies, battery chargers, audio amplifiers, LED drivers, and other electronic circuits requiring precise voltage regulation.

  7. Q: How accurate is TL431BIDBVR? A: TL431BIDBVR has a high accuracy with a typical tolerance of ±1% over the specified temperature range.

  8. Q: Can TL431BIDBVR be used in high-current applications? A: Yes, TL431BIDBVR can handle moderate currents up to 100mA. For higher current applications, an external transistor or MOSFET should be used.

  9. Q: Is TL431BIDBVR suitable for automotive applications? A: Yes, TL431BIDBVR is often used in automotive applications such as voltage regulators, battery management systems, and lighting control circuits.

  10. Q: Are there any precautions to consider when using TL431BIDBVR? A: Yes, some precautions include ensuring proper heat dissipation, avoiding excessive input voltage, and providing adequate decoupling capacitors for stability.

Please note that these answers are general and may vary depending on the specific application and circuit design.