Texas Instruments
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TL431IDE4
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TL431IDE4

Product Overview

  • Category: Integrated Circuit
  • Use: Voltage Reference
  • Characteristics:
    • Adjustable precision shunt regulator
    • Programmable output voltage
    • Low dynamic output impedance
    • Wide operating current range
  • Package: SOIC-8
  • Essence: Precision voltage reference
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Reference Voltage Range: 2.495V to 36V
  • Operating Current Range: 1mA to 100mA
  • Temperature Range: -40°C to +85°C
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Output Voltage Tolerance: ±1%
  • Quiescent Current: 1.5mA (typical)

Detailed Pin Configuration

The TL431IDE4 is an integrated circuit with an SOIC-8 package. It has the following pin configuration:

  1. Anode
  2. Cathode
  3. Reference Voltage
  4. N/C (No Connection)
  5. Control Terminal
  6. N/C (No Connection)
  7. N/C (No Connection)
  8. Cathode

Functional Features

The TL431IDE4 is a precision voltage reference that can be used as an adjustable precision shunt regulator. Its key features include:

  • Programmable output voltage through external resistors
  • Low dynamic output impedance for improved stability
  • Wide operating current range, making it suitable for various applications
  • High accuracy and temperature stability

Advantages and Disadvantages

Advantages

  • Precise and stable voltage reference
  • Adjustable output voltage
  • Low dynamic output impedance
  • Wide operating current range
  • Easy to use and integrate into circuits

Disadvantages

  • Requires external resistors for voltage adjustment
  • Limited output current capability
  • Sensitive to temperature variations

Working Principles

The TL431IDE4 operates based on the principle of a precision shunt regulator. It compares the reference voltage at its control terminal with an external voltage divider network. By adjusting the resistance values in the voltage divider, the output voltage can be programmed within the specified range. The TL431IDE4 maintains a stable output voltage by dynamically adjusting its impedance based on the load conditions.

Detailed Application Field Plans

The TL431IDE4 is widely used in various applications that require a precise and stable voltage reference. Some common application fields include:

  1. Power Supply Regulation: The TL431IDE4 can be used as a voltage reference in power supply circuits to regulate the output voltage accurately.
  2. Battery Charging: It can be employed in battery charging circuits to maintain a constant charging voltage.
  3. Audio Amplifiers: The TL431IDE4 can be utilized in audio amplifier circuits to provide a stable bias voltage for improved performance.
  4. Voltage Monitoring: It can be used in voltage monitoring circuits to trigger alarms or shutdown systems when the voltage exceeds a certain threshold.

Detailed and Complete Alternative Models

Some alternative models to the TL431IDE4 that offer similar functionality are:

  1. LM4040: Precision Shunt Voltage Reference
  2. LT1009: Precision Reference
  3. REF3030: Adjustable Precision Voltage Reference
  4. MAX6126: Ultra-High-Precision Voltage Reference

These alternative models can be considered based on specific requirements and design constraints.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TL431IDE4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TL431IDE4 in technical solutions:

  1. Q: What is TL431IDE4? A: TL431IDE4 is a programmable precision voltage reference integrated circuit (IC) that can be used in various technical applications.

  2. Q: What is the purpose of TL431IDE4? A: TL431IDE4 is commonly used as a voltage reference or shunt regulator in electronic circuits to provide stable and accurate voltage levels.

  3. Q: How does TL431IDE4 work? A: TL431IDE4 compares the input voltage with an internal reference voltage and adjusts its output accordingly, acting as a feedback control element.

  4. Q: What is the voltage range of TL431IDE4? A: The voltage range of TL431IDE4 is typically from 2.5V to 36V, making it suitable for a wide range of applications.

  5. Q: Can TL431IDE4 be used as a voltage regulator? A: Yes, TL431IDE4 can be used as a voltage regulator by connecting it in a feedback loop with an external transistor or MOSFET.

  6. Q: What are the advantages of using TL431IDE4? A: TL431IDE4 offers high accuracy, low temperature coefficient, low dynamic impedance, and good line regulation, making it ideal for precision applications.

  7. Q: Can TL431IDE4 be used in switching power supplies? A: Yes, TL431IDE4 can be used in switching power supplies as a feedback element to regulate the output voltage.

  8. Q: Is TL431IDE4 suitable for battery charging applications? A: Yes, TL431IDE4 can be used in battery charging circuits to maintain a constant voltage level during the charging process.

  9. Q: Can TL431IDE4 be used in audio amplifier circuits? A: Yes, TL431IDE4 can be used in audio amplifier circuits to provide stable bias voltage or reference voltage for accurate signal processing.

  10. Q: Are there any specific precautions when using TL431IDE4? A: It is important to ensure proper decoupling and stability considerations while using TL431IDE4, and to follow the manufacturer's datasheet guidelines for optimal performance.

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