ON Semiconductor
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TL431IPG
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TL431IPG

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Reference
  • Characteristics: Adjustable, Precision, Shunt Regulator
  • Package: TO-92, SOT-23, SOIC-8
  • Essence: Programmable Precision Reference
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Reference Voltage Range: 2.495V to 36V
  • Output Current: 1mA to 100mA
  • Temperature Coefficient: ±50ppm/°C
  • Operating Temperature Range: -40°C to +85°C
  • Line Regulation: 0.2%/V
  • Load Regulation: 0.4%/mA
  • Dropout Voltage: 1.5V typical at 10mA
  • Cathode Current: 1mA to 150mA

Detailed Pin Configuration

The TL431IPG has three pins:

  1. Anode (A): Connected to the reference voltage input.
  2. Cathode (K): Connected to the regulated output voltage.
  3. Reference (R): Connected to the external resistive divider.

Functional Features

  • Programmable Output Voltage: The TL431IPG can be programmed to provide a precise output voltage within the specified range.
  • High Precision: It offers excellent voltage regulation with low temperature coefficient and line/load regulation.
  • Low Dropout Voltage: The device operates with a low dropout voltage, ensuring efficient voltage regulation even in low voltage applications.
  • Adjustable Output Current: The output current can be adjusted by selecting appropriate external resistors.
  • Short-Circuit Protection: The TL431IPG includes built-in short-circuit protection to prevent damage to the device under fault conditions.

Advantages and Disadvantages

Advantages: - Wide operating voltage range - High precision and accuracy - Low dropout voltage - Adjustable output voltage - Short-circuit protection

Disadvantages: - Limited output current capability - Requires external resistive divider for precise voltage setting

Working Principles

The TL431IPG is a shunt regulator that uses a precision reference voltage to regulate the output voltage. It compares the reference voltage with the feedback voltage from the resistive divider and adjusts the current flowing through the cathode to maintain a stable output voltage.

Detailed Application Field Plans

The TL431IPG is widely used in various applications, including:

  1. Power Supplies: It is commonly used as a voltage reference in linear power supplies to provide stable and accurate output voltages.
  2. Battery Chargers: The TL431IPG can be used in battery charging circuits to regulate the charging voltage and prevent overcharging.
  3. Voltage Monitors: It is utilized in voltage monitoring circuits to detect and control voltage levels in electronic systems.
  4. Audio Amplifiers: The TL431IPG can be employed in audio amplifiers to provide precise biasing and voltage regulation.

Detailed and Complete Alternative Models

Some alternative models to TL431IPG include:

  1. LM431: Similar shunt regulator with adjustable output voltage and similar pin configuration.
  2. TLV431: Low-voltage version of TL431 with extended operating temperature range.
  3. LT1634: Precision voltage reference with higher accuracy and lower temperature coefficient.

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af TL431IPG i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of TL431IPG in technical solutions:

  1. Q: What is TL431IPG? A: TL431IPG is a programmable precision voltage reference integrated circuit (IC) commonly used in various technical applications.

  2. Q: What is the purpose of TL431IPG? A: TL431IPG is primarily used as a voltage reference or shunt regulator to provide stable and accurate voltage levels in electronic circuits.

  3. Q: How does TL431IPG work? A: TL431IPG compares the input voltage with an internal reference voltage and adjusts its output accordingly to maintain a constant voltage level.

  4. Q: What are the typical applications of TL431IPG? A: TL431IPG is widely used in power supplies, battery chargers, voltage regulators, audio amplifiers, and other electronic systems requiring precise voltage control.

  5. Q: What is the voltage range supported by TL431IPG? A: TL431IPG can operate within a voltage range of 2.5V to 36V, making it suitable for a wide range of low to medium voltage applications.

  6. Q: Can TL431IPG handle high currents? A: Yes, TL431IPG can handle currents up to 100mA, which is sufficient for most low-power applications. For higher currents, an external transistor can be used.

  7. Q: How accurate is TL431IPG in maintaining voltage levels? A: TL431IPG has a typical accuracy of ±1% over temperature and voltage variations, making it highly reliable for precision voltage regulation.

  8. Q: Can TL431IPG be used for both positive and negative voltage regulation? A: Yes, TL431IPG can be used for both positive and negative voltage regulation by simply connecting it in the appropriate configuration.

  9. Q: Does TL431IPG require external components for operation? A: Yes, TL431IPG requires a few external components such as resistors and capacitors to set the desired voltage level and stabilize its operation.

  10. Q: Is TL431IPG available in different package options? A: Yes, TL431IPG is available in various package options, including TO-92, SOT-23, and SOIC, allowing flexibility in design and integration into different systems.

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