STMicroelectronics
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TL431IL3T
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TL431IL3T

Product Overview

  • Category: Integrated Circuit
  • Use: Voltage Reference
  • Characteristics: Adjustable Precision Shunt Regulator
  • Package: SOT-23
  • Essence: Programmable Precision References
  • Packaging/Quantity: Tape & Reel, 3000 pieces per reel

Specifications

  • Reference Voltage Range: 2.495V to 36V
  • Temperature Coefficient: ±50 ppm/°C
  • Operating Temperature Range: -40°C to +85°C
  • Output Current: 100mA
  • Shunt Current: 1mA to 100mA
  • Reference Input Current: 0.8µA to 10µA
  • Reference Output Impedance: 0.2Ω to 1Ω

Detailed Pin Configuration

The TL431IL3T 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 wide range of options.
  • High precision and stability over temperature and time.
  • Low dynamic impedance ensures good load regulation.
  • Low output noise for sensitive applications.
  • Fast response time to changes in input voltage.

Advantages and Disadvantages

Advantages

  • Wide operating voltage range.
  • High accuracy and stability.
  • Low power consumption.
  • Small package size.
  • Easy to use and integrate into various circuits.

Disadvantages

  • Limited output current capability.
  • Requires external components for certain applications.
  • Sensitivity to input voltage fluctuations.

Working Principles

The TL431IL3T is a three-terminal adjustable precision shunt regulator. It operates by comparing the reference voltage at the Reference pin (R) with the voltage at the Anode pin (A). The internal circuitry adjusts the current flowing through the Cathode pin (K) to maintain a constant voltage between the Reference and Cathode pins.

Detailed Application Field Plans

The TL431IL3T is widely used in various applications, including:

  1. Voltage regulation in power supplies.
  2. Battery charging circuits.
  3. Precision measurement instruments.
  4. Audio amplifiers and preamplifiers.
  5. LED lighting systems.
  6. Industrial control systems.
  7. Automotive electronics.

Detailed and Complete Alternative Models

  • TLV431B
  • LM4040
  • LT1009
  • REF02
  • MAX6126

These alternative models offer similar functionality and can be used as substitutes for the TL431IL3T in various applications.

In conclusion, the TL431IL3T is a versatile integrated circuit that serves as an adjustable precision shunt regulator. Its wide range of applications, high accuracy, and stability make it a popular choice in many electronic systems.

רשום 10 שאלות ותשובות נפוצות הקשורות ליישום של TL431IL3T בפתרונות טכניים

Sure! Here are 10 common questions and answers related to the application of TL431IL3T in technical solutions:

  1. Q: What is TL431IL3T? A: TL431IL3T is a three-terminal adjustable precision shunt regulator that can be used in various technical applications.

  2. Q: What is the purpose of TL431IL3T? A: TL431IL3T is commonly used to provide voltage regulation, voltage reference, or voltage monitoring in electronic circuits.

  3. Q: How does TL431IL3T work? A: TL431IL3T 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 TL431IL3T? A: TL431IL3T can operate within a voltage range of typically 2.5V to 36V.

  5. Q: Can TL431IL3T handle high currents? A: No, TL431IL3T is not designed for high current applications. It is typically used for low to moderate current requirements.

  6. Q: How accurate is TL431IL3T in voltage regulation? A: TL431IL3T has a typical accuracy of ±1% in voltage regulation.

  7. Q: Can TL431IL3T be used as a voltage reference? A: Yes, TL431IL3T can be used as a precise voltage reference due to its inherent stability and accuracy.

  8. Q: Is TL431IL3T suitable for battery charging applications? A: Yes, TL431IL3T can be used in battery charging circuits to regulate the charging voltage and protect the battery from overcharging.

  9. Q: Can TL431IL3T be used in switching power supplies? A: Yes, TL431IL3T can be used as a feedback element in switching power supplies to regulate the output voltage.

  10. Q: Are there any precautions to consider when using TL431IL3T? A: Yes, it is important to ensure proper heat dissipation, avoid exceeding the maximum ratings, and follow the manufacturer's guidelines for stability and reliability.

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