Texas Instruments
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TL431BCDBZR
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TL431BCDBZR

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Reference
  • Characteristics:
    • Adjustable precision shunt regulator
    • Programmable output voltage
    • Low dynamic impedance
    • Wide operating current range
  • Package: SOT-23-3
  • Essence: Precision adjustable shunt regulator
  • Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

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

Detailed Pin Configuration

The TL431BCDBZR has three pins in the SOT-23-3 package: 1. Anode (A): Connected to the reference voltage input. 2. Cathode (C): Connected to the ground or negative supply voltage. 3. Reference (R): Provides the regulated output voltage.

Functional Features

  • Precision voltage reference: The TL431BCDBZR provides a highly accurate reference voltage that can be adjusted according to the application requirements.
  • Programmable output voltage: The output voltage can be easily programmed using two external resistors, allowing flexibility in design.
  • Low dynamic impedance: The device exhibits low dynamic impedance, ensuring stable performance even with varying load conditions.
  • Wide operating current range: The TL431BCDBZR can operate within a wide range of current levels, making it suitable for various applications.

Advantages and Disadvantages

Advantages

  • High precision and accuracy
  • Easy to use and program
  • Wide operating temperature range
  • Low dynamic impedance ensures stability

Disadvantages

  • Limited output current capability (up to 100mA)
  • Requires external resistors for voltage programming

Working Principles

The TL431BCDBZR is a precision shunt regulator that operates by comparing the reference voltage at the Reference pin with an internal voltage divider. By adjusting the voltage at the Reference pin, the output voltage can be set to a desired value. The device maintains a constant voltage drop between the Anode and Cathode pins, ensuring a stable output voltage.

Detailed Application Field Plans

The TL431BCDBZR finds applications in various fields, including: 1. Power supplies: It is commonly used as a voltage reference in power supply circuits to provide stable and accurate output voltages. 2. Battery charging systems: The TL431BCDBZR can be employed in battery charging circuits to regulate the charging voltage and ensure proper charging of batteries. 3. Voltage regulators: It can be utilized as a voltage regulator in electronic devices to maintain a constant voltage level for reliable operation. 4. Audio amplifiers: The TL431BCDBZR can be integrated into audio amplifier circuits to provide precise biasing and voltage stabilization.

Detailed and Complete Alternative Models

Some alternative models to the TL431BCDBZR include: 1. TLV431AIDBVR: SOT-23-5 package, adjustable precision shunt regulator. 2. LM4040CIM3-2.5/NOPB: SOT-23-3 package, precision micropower shunt voltage reference. 3. REF3030AIDBZT: SOT-23-3 package, low-power voltage reference.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af TL431BCDBZR i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of TL431BCDBZR in technical solutions:

  1. Q: What is TL431BCDBZR? A: TL431BCDBZR is a three-terminal adjustable precision shunt regulator that can be used in various technical applications.

  2. Q: What is the purpose of TL431BCDBZR? A: TL431BCDBZR is commonly used to provide voltage regulation, voltage reference, or voltage monitoring in electronic circuits.

  3. Q: How does TL431BCDBZR work? A: TL431BCDBZR compares the reference voltage at its reference pin with an external voltage divider network, and adjusts its output accordingly to maintain a stable voltage.

  4. Q: What is the voltage range of TL431BCDBZR? A: TL431BCDBZR operates within a voltage range of 2.5V to 36V.

  5. Q: Can TL431BCDBZR be used as a voltage reference? A: Yes, TL431BCDBZR can be used as a precise voltage reference due to its low temperature coefficient and high accuracy.

  6. Q: How can TL431BCDBZR be used for voltage regulation? A: TL431BCDBZR can be connected in a feedback loop with an operational amplifier to regulate the output voltage of a power supply or other circuit.

  7. Q: Is TL431BCDBZR suitable for battery charging applications? A: Yes, TL431BCDBZR can be used in battery charging circuits to control the charging voltage and prevent overcharging.

  8. Q: Can TL431BCDBZR be used for current limiting? A: Yes, TL431BCDBZR can be used in conjunction with a series resistor to limit the current flowing through a load.

  9. Q: What are the typical applications of TL431BCDBZR? A: TL431BCDBZR is commonly used in power supplies, battery chargers, voltage regulators, audio amplifiers, and other electronic circuits requiring precise voltage control.

  10. Q: Are there any alternative devices to TL431BCDBZR? A: Yes, some alternative devices to TL431BCDBZR include LM431, TLV431, and LT431, which offer similar functionality with slight variations in specifications.

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