Texas Instruments
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TL431CPG4
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TL431CPG4

Product Overview

Category

TL431CPG4 belongs to the category of voltage references.

Use

It is commonly used as a precision shunt regulator in various electronic circuits.

Characteristics

  • TL431CPG4 is a three-terminal adjustable precision shunt regulator.
  • It operates over a wide current range from 1mA to 100mA.
  • The output voltage can be set to any value between Vref (2.5V) and 36V using external resistors.
  • It has a low dynamic output impedance, ensuring stability even with varying load conditions.
  • TL431CPG4 offers high accuracy and temperature stability.

Package

The TL431CPG4 comes in a TO-92 package, which is a small plastic package with three leads.

Essence

The essence of TL431CPG4 lies in its ability to provide precise voltage regulation in electronic circuits.

Packaging/Quantity

TL431CPG4 is typically packaged in reels or tubes, with quantities ranging from hundreds to thousands per package.

Specifications

  • Reference Voltage (Vref): 2.5V
  • Operating Current Range: 1mA to 100mA
  • Output Voltage Range: Vref to 36V
  • Dynamic Output Impedance: Low
  • Temperature Stability: High

Detailed Pin Configuration

The TL431CPG4 has three pins:

  1. Anode (A): Connected to the reference voltage (Vref).
  2. Cathode (K): Connected to the ground or the negative terminal of the circuit.
  3. Control (C): Connected to the external resistors to set the desired output voltage.

Functional Features

  • Precise voltage regulation: TL431CPG4 provides accurate and stable output voltage.
  • Wide operating current range: It can handle currents from 1mA to 100mA.
  • Adjustable output voltage: The output voltage can be easily set using external resistors.
  • Low dynamic output impedance: Ensures stability even with varying load conditions.

Advantages and Disadvantages

Advantages

  • High accuracy and temperature stability.
  • Easy to use and configure.
  • Wide operating current range.
  • Cost-effective solution for voltage regulation.

Disadvantages

  • Requires external resistors for voltage setting.
  • Limited maximum output voltage of 36V.

Working Principles

The TL431CPG4 operates based on the principle of a shunt regulator. It compares the reference voltage (Vref) at the anode pin with the voltage at the control pin. By adjusting the resistance connected to the control pin, the output voltage is regulated. The TL431CPG4 continuously monitors and adjusts the current flowing through it to maintain a stable output voltage.

Detailed Application Field Plans

TL431CPG4 finds applications in various electronic circuits, including:

  1. Power supplies: It is used for voltage regulation in power supply circuits.
  2. Battery chargers: TL431CPG4 ensures precise charging voltage for batteries.
  3. Audio amplifiers: It provides stable biasing voltage for audio amplifier circuits.
  4. Voltage references: TL431CPG4 serves as a reliable voltage reference in many applications.
  5. LED drivers: It helps regulate the current supplied to LEDs, ensuring consistent brightness.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to TL431CPG4 are:

  1. LM4040: A precision voltage reference with similar characteristics.
  2. LT1009: Another adjustable precision shunt regulator.
  3. REF3030: A low-power voltage reference suitable for battery-powered applications.

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

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TL431CPG4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TL431CPG4 in technical solutions:

  1. Q: What is TL431CPG4? A: TL431CPG4 is a three-terminal adjustable precision shunt regulator commonly used in various technical applications.

  2. Q: What is the purpose of TL431CPG4? A: TL431CPG4 is used to provide accurate voltage references, voltage regulation, and error amplification in electronic circuits.

  3. Q: How does TL431CPG4 work? A: TL431CPG4 compares the reference voltage at its reference pin with an external voltage, and adjusts its output accordingly to maintain a stable voltage.

  4. Q: What is the voltage range of TL431CPG4? A: The voltage range of TL431CPG4 is typically from 2.5V to 36V, making it suitable for a wide range of applications.

  5. Q: Can TL431CPG4 be used as a voltage regulator? A: Yes, TL431CPG4 can be used as a voltage regulator by connecting it in a feedback loop with an operational amplifier or transistor.

  6. Q: What are some typical applications of TL431CPG4? A: TL431CPG4 is commonly used in power supplies, battery chargers, audio amplifiers, LED drivers, and other circuits requiring precise voltage regulation.

  7. Q: How accurate is TL431CPG4 in voltage regulation? A: TL431CPG4 has a high level of accuracy, typically within ±1% of the desired output voltage.

  8. Q: Can TL431CPG4 handle high currents? A: TL431CPG4 can handle currents up to 100mA, but for higher currents, an external transistor or operational amplifier is required.

  9. Q: Is TL431CPG4 temperature-compensated? A: Yes, TL431CPG4 has built-in temperature compensation to maintain stable operation over a wide temperature range.

  10. Q: Are there any precautions when using TL431CPG4? A: It is important to ensure proper decoupling and stability in the circuit design. Additionally, attention should be given to thermal dissipation as TL431CPG4 can get hot under high load conditions.

Please note that these answers are general and may vary depending on specific applications and requirements.