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TL431AQPKG3
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TL431AQPKG3

Product Overview

  • Category: Integrated Circuit
  • Use: Voltage Reference
  • Characteristics: Adjustable Precision Shunt Regulator
  • Package: TO-92 (3-Lead Plastic Package)
  • Essence: Programmable Precision References
  • Packaging/Quantity: Tape and Reel, 2,500 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 Impedance: 0.22Ω typical
  • Cathode Current: 1mA to 100mA
  • Anode Current: 0.4mA typical
  • Dynamic Output Impedance: 0.25Ω typical

Pin Configuration

The TL431AQPKG3 has three pins:

  1. Anode (A): Connected to the anode of the internal diode.
  2. Cathode (K): Connected to the cathode of the internal diode.
  3. Reference (R): Provides the adjustable reference voltage.

Functional Features

  • Programmable output voltage with a single external resistor.
  • High precision and stability over temperature and time.
  • Low dynamic output impedance.
  • Wide operating current range.
  • Fast response time to changes in input voltage.

Advantages and Disadvantages

Advantages

  • Easy to use and implement in various applications.
  • Provides accurate and stable voltage references.
  • Low power consumption.
  • Wide operating temperature range.
  • Cost-effective solution.

Disadvantages

  • Requires an external resistor for voltage programming.
  • Limited output current capability.
  • Sensitivity to external noise and fluctuations.

Working Principles

The TL431AQPKG3 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 programmed to a desired value. The device maintains a constant voltage between the Anode and Cathode pins, ensuring a stable output voltage regardless of input variations.

Detailed Application Field Plans

The TL431AQPKG3 is widely used in various applications, including:

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

Detailed and Complete Alternative Models

Some alternative models to the TL431AQPKG3 include:

  1. TLV431A: Adjustable Precision Shunt Regulator in SOT-23 package.
  2. LM4040: Precision Micropower Shunt Voltage Reference in SOT-23 package.
  3. LT1009: Precision Reference in TO-92 package.
  4. REF02: Precision Voltage Reference in DIP-8 package.
  5. MAX6126: Ultra-High-Precision Voltage Reference in SOT-23 package.

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

In conclusion, the TL431AQPKG3 is a versatile voltage reference integrated circuit that offers precise and stable voltage regulation. Its adjustable output voltage, low dynamic impedance, and wide operating temperature range make it suitable for various applications. While it has some limitations, such as the need for an external resistor and limited output current capability, it remains a popular choice due to its ease of use and cost-effectiveness.

Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi TL431AQPKG3 dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of TL431AQPKG3 in technical solutions:

  1. Q: What is TL431AQPKG3? A: TL431AQPKG3 is a three-terminal adjustable precision shunt regulator that can be used in various technical solutions.

  2. Q: What are the key features of TL431AQPKG3? A: TL431AQPKG3 offers a reference voltage accuracy of ±1%, low dynamic output impedance, and a wide operating current range.

  3. Q: How does TL431AQPKG3 work? A: TL431AQPKG3 compares the reference voltage with an external voltage divider network and adjusts its internal resistance to maintain a stable output voltage.

  4. Q: What are the typical applications of TL431AQPKG3? A: TL431AQPKG3 is commonly used in power supplies, battery chargers, LED drivers, and voltage regulators.

  5. Q: What is the maximum operating voltage for TL431AQPKG3? A: The maximum operating voltage for TL431AQPKG3 is 36 volts.

  6. Q: Can TL431AQPKG3 handle high currents? A: Yes, TL431AQPKG3 can handle currents up to 100 mA.

  7. Q: How do I set the desired output voltage using TL431AQPKG3? A: The output voltage can be set by connecting an external resistor divider network between the REF and GND pins of TL431AQPKG3.

  8. Q: Is TL431AQPKG3 suitable for both linear and switching power supply designs? A: Yes, TL431AQPKG3 can be used in both linear and switching power supply designs.

  9. Q: Does TL431AQPKG3 have built-in overvoltage protection? A: No, TL431AQPKG3 does not have built-in overvoltage protection. External circuitry may be required for overvoltage protection.

  10. Q: Are there any temperature considerations when using TL431AQPKG3? A: Yes, TL431AQPKG3 has a specified operating temperature range of -40°C to +85°C. It is important to ensure proper thermal management in high-temperature applications.

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