Diodes Incorporated
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TLV431AFTA
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TLV431AFTA

Product Overview

  • Category: Integrated Circuits
  • Use: Voltage Reference
  • Characteristics: Low-voltage adjustable precision shunt regulator
  • Package: SOT-23 (Small Outline Transistor)
  • Essence: Precision voltage reference with adjustable output
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Reference Voltage Range: 1.24V to 6V
  • Output Current Range: 1mA to 100mA
  • Operating Temperature Range: -40°C to +85°C
  • Line Regulation: 0.2% typical
  • Load Regulation: 0.4% typical
  • Temperature Coefficient: 50ppm/°C typical

Detailed Pin Configuration

The TLV431AFTA has three pins:

  1. Anode (A): Connected to the positive terminal of the power supply.
  2. Cathode (K): Connected to the load or ground.
  3. Reference (R): Provides the adjustable output voltage.

Functional Features

  • Adjustable output voltage through an external resistor divider network.
  • Low operating current consumption.
  • High accuracy and stability over temperature and time.
  • Fast response time to changes in input voltage.
  • Low output impedance for improved load regulation.

Advantages

  • Wide range of adjustable output voltages.
  • Excellent line and load regulation.
  • Low temperature coefficient ensures stability across various operating conditions.
  • Small package size allows for space-saving designs.
  • Cost-effective solution for voltage reference applications.

Disadvantages

  • Limited output current capability compared to other voltage regulators.
  • Requires an external resistor divider network for voltage adjustment.
  • Not suitable for high-power applications.

Working Principles

The TLV431AFTA is a precision shunt regulator that maintains a stable output voltage by shunting excess current to ground. It operates by comparing the reference voltage at the R pin with an internal voltage reference. The difference between these voltages determines the amount of current flowing through the device. By adjusting the resistor divider network connected to the R pin, the output voltage can be set within the specified range.

Detailed Application Field Plans

The TLV431AFTA is commonly used in various applications, including:

  1. Voltage references for analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
  2. Precision power supplies for instrumentation and measurement equipment.
  3. Voltage regulators for battery-powered devices.
  4. Current limiters and overvoltage protection circuits.
  5. Temperature sensors and compensation circuits.

Detailed and Complete Alternative Models

  1. TL431AIDBZR: SOT-23 package, adjustable precision shunt regulator.
  2. LM4040CIM3-2.5/NOPB: SOT-23 package, precision micropower shunt voltage reference.
  3. REF3030AIDBZT: SOT-23 package, low-power voltage reference with adjustable output.

These alternative models offer similar functionality and can be considered as substitutes for the TLV431AFTA in various applications.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق TLV431AFTA في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of TLV431AFTA in technical solutions:

  1. Q: What is TLV431AFTA? A: TLV431AFTA is a precision adjustable shunt voltage reference that can be used in various technical applications.

  2. Q: What is the purpose of TLV431AFTA? A: TLV431AFTA is primarily used as a voltage reference or regulator in electronic circuits to provide stable and accurate voltage levels.

  3. Q: What is the voltage range of TLV431AFTA? A: The TLV431AFTA has an adjustable voltage range from 1.24V to 6V, making it suitable for a wide range of applications.

  4. Q: How does TLV431AFTA work? A: TLV431AFTA works by comparing the input voltage with a reference voltage and adjusting its output to maintain a constant voltage level.

  5. Q: Can TLV431AFTA be used as a voltage regulator? A: Yes, TLV431AFTA can be used as a voltage regulator by connecting it in parallel with the load and adjusting the reference voltage accordingly.

  6. Q: What are the typical applications of TLV431AFTA? A: TLV431AFTA is commonly used in power supplies, battery chargers, audio amplifiers, and other electronic devices that require precise voltage regulation.

  7. Q: Is TLV431AFTA suitable for low-power applications? A: Yes, TLV431AFTA is designed for low-power applications and has a low quiescent current, making it energy-efficient.

  8. Q: Can TLV431AFTA handle high currents? A: TLV431AFTA is not designed to handle high currents directly. It is typically used in conjunction with external transistors or amplifiers to handle higher current loads.

  9. Q: What are the advantages of using TLV431AFTA? A: TLV431AFTA offers high accuracy, low temperature coefficient, low power consumption, and a wide operating voltage range, making it suitable for many applications.

  10. Q: Are there any precautions to consider when using TLV431AFTA? 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 specific application requirements.