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TL431ACPWRG4
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TL431ACPWRG4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Reference
  • Characteristics: Adjustable Precision Shunt Regulator
  • Package: SOT-23 (Small Outline Transistor)
  • Essence: Programmable Precision Reference
  • Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

  • Reference Voltage Range: 2.495V to 36V
  • Output Current: Up to 100mA
  • Operating Temperature Range: -40°C to +85°C
  • Accuracy: ±1%
  • Line Regulation: 0.2% typical
  • Load Regulation: 0.4% typical
  • Temperature Stability: 50ppm/°C typical
  • Cathode Current: 1mA to 100mA

Pin Configuration

The TL431ACPWRG4 has three pins:

  1. Anode (A): Connected to the positive terminal of the power supply.
  2. Cathode (K): Connected to the load or ground.
  3. Reference (R): Provides the adjustable reference voltage.

Functional Features

  • Adjustable Output Voltage: The TL431ACPWRG4 can be programmed to provide a precise output voltage within the specified range.
  • Precision Reference: It offers high accuracy and stability over temperature and load variations.
  • Low Power Consumption: The device operates with low quiescent current, making it suitable for battery-powered applications.
  • Short-Circuit Protection: The TL431ACPWRG4 includes built-in short-circuit protection to prevent damage to the device and the load.

Advantages and Disadvantages

Advantages

  • Wide operating voltage range
  • High accuracy and stability
  • Low power consumption
  • Small package size
  • Short-circuit protection

Disadvantages

  • Limited output current capacity (up to 100mA)
  • Requires external resistors for precise voltage adjustment

Working Principles

The TL431ACPWRG4 is a three-terminal adjustable shunt regulator. It operates by comparing the reference voltage at the Reference pin with an internal voltage divider network. By adjusting the resistance connected to the Reference pin, the output voltage can be precisely set.

When the output voltage exceeds the reference voltage, the TL431ACPWRG4 starts conducting current from the Anode to the Cathode, effectively regulating the output voltage.

Detailed Application Field Plans

The TL431ACPWRG4 finds applications in various fields, including:

  1. Power Supplies: It is commonly used as a voltage reference in linear and switching power supplies.
  2. Battery Chargers: The TL431ACPWRG4 helps regulate the charging voltage in battery charger circuits.
  3. Audio Amplifiers: It can be used as a precision voltage reference in audio amplifier circuits.
  4. Voltage Monitors: The device is suitable for monitoring and controlling voltage levels in electronic systems.
  5. LED Drivers: It assists in maintaining a stable voltage for driving LEDs.

Detailed and Complete Alternative Models

  1. TL431ACD: DIP-8 package, similar specifications.
  2. TLV431BQDBZR: SOT-23 package, lower reference voltage range.
  3. LM4040AIM3-2.5/NOPB: SOT-23 package, fixed 2.5V reference voltage.

These alternative models offer similar functionality and can be considered as substitutes for the TL431ACPWRG4 in specific applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TL431ACPWRG4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TL431ACPWRG4:

  1. Q: What is TL431ACPWRG4? A: TL431ACPWRG4 is a three-terminal adjustable precision shunt regulator that can be used in various technical solutions.

  2. Q: What is the purpose of TL431ACPWRG4? A: TL431ACPWRG4 is commonly used to provide voltage regulation, voltage reference, or error amplification in electronic circuits.

  3. Q: How does TL431ACPWRG4 work? A: TL431ACPWRG4 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 TL431ACPWRG4? A: TL431ACPWRG4 operates within a voltage range of 2.5V to 36V.

  5. Q: Can TL431ACPWRG4 handle high currents? A: No, TL431ACPWRG4 is typically used for low to moderate current applications. For higher currents, an external transistor can be added to amplify the current handling capability.

  6. Q: How accurate is TL431ACPWRG4 in voltage regulation? A: TL431ACPWRG4 has a typical accuracy of ±2% over temperature and load variations.

  7. Q: Can TL431ACPWRG4 be used as a voltage reference? A: Yes, TL431ACPWRG4 can be used as a precise voltage reference due to its inherent stability and low temperature coefficient.

  8. Q: What are some common applications of TL431ACPWRG4? A: TL431ACPWRG4 is commonly used in power supplies, battery chargers, voltage regulators, audio amplifiers, and feedback control circuits.

  9. Q: How do I set the output voltage of TL431ACPWRG4? A: The output voltage can be set by connecting an external resistor divider network between the reference pin and ground, according to the desired voltage level.

  10. Q: Is there any protection built into TL431ACPWRG4? A: Yes, TL431ACPWRG4 has built-in overcurrent and overtemperature protection features to ensure safe operation in various conditions.

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