Texas Instruments
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TL431BILPR
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TL431BILPR

Product Overview

  • Category: Integrated Circuit
  • 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 Range: -40°C to +85°C
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Reference Voltage Tolerance: ±0.5% (typical)

Detailed Pin Configuration

The TL431BILPR 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 single external resistor.
  • High precision and stability over temperature and time.
  • Low dynamic impedance ensures good load regulation.
  • Wide operating current range for various applications.
  • Fast response time to changes in input voltage.

Advantages and Disadvantages

Advantages

  • Easy to use and configure.
  • Provides precise and stable reference voltage.
  • Low cost and widely available.
  • Suitable for a wide range of applications.
  • Can be used as a replacement for Zener diodes.

Disadvantages

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

Working Principles

The TL431BILPR is a three-terminal adjustable precision shunt regulator. It operates by comparing the reference voltage at the Reference (R) pin with an internal voltage reference. By adjusting the external resistor connected between the Anode (A) and Cathode (K) pins, the output voltage can be set to a desired value within the specified range.

Detailed Application Field Plans

The TL431BILPR is widely used in various applications, including:

  1. Voltage regulation in power supplies.
  2. Battery charging circuits.
  3. Switching power converters.
  4. Precision instrumentation.
  5. Audio amplifiers.
  6. LED drivers.
  7. Automotive electronics.
  8. Industrial control systems.

Detailed and Complete Alternative Models

  • TL431ACLP
  • TL431BCD
  • TL431BQDBVR
  • TL431BQDCKR
  • TL431BQDBZRG4
  • TL431BQDBZR

These alternative models offer similar functionality and performance to the TL431BILPR and can be used as replacements depending on specific requirements.

In conclusion, the TL431BILPR is a versatile and widely used programmable precision shunt regulator. Its adjustable output voltage, high precision, and stability make it suitable for a wide range of applications. However, it has limitations in terms of output current and power handling capacity. Engineers should consider these factors when selecting the TL431BILPR or its alternative models for their designs.

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Énumérez 10 questions et réponses courantes liées à l'application de TL431BILPR dans les solutions techniques

  1. What is the TL431BILPR?
    The TL431BILPR is a precision programmable reference voltage source used in various technical solutions.

  2. What is the typical application of TL431BILPR?
    The TL431BILPR is commonly used as a voltage reference in power supplies, battery chargers, and voltage regulators.

  3. How does the TL431BILPR work?
    The TL431BILPR operates by comparing an input voltage to a precise internal reference voltage and adjusting its output to maintain a constant voltage.

  4. What is the voltage range of TL431BILPR?
    The TL431BILPR typically operates within a voltage range of 2.5V to 36V.

  5. Can the TL431BILPR be used for overvoltage protection?
    Yes, the TL431BILPR can be used to provide overvoltage protection by triggering a shutdown when the input voltage exceeds a certain threshold.

  6. Is the TL431BILPR suitable for low-power applications?
    Yes, the TL431BILPR is suitable for low-power applications due to its low quiescent current and wide operating temperature range.

  7. What are the key features of TL431BILPR?
    Key features of the TL431BILPR include adjustable output voltage, high accuracy, and low dynamic impedance.

  8. Can the TL431BILPR be used in automotive applications?
    Yes, the TL431BILPR is suitable for automotive applications such as voltage monitoring and regulation in vehicle systems.

  9. What are the typical package options for TL431BILPR?
    The TL431BILPR is available in various package options including SOT-23, TO-92, and SOIC-8.

  10. Are there any design considerations when using TL431BILPR?
    Design considerations for using the TL431BILPR include proper decoupling, thermal management, and ensuring stability in feedback loops.