Diodes Incorporated
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AP431AVL-A
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AP431AVL-A

Product Overview

Category: Electronic Component
Use: Voltage Reference
Characteristics: High precision, low dropout voltage, adjustable output voltage
Package: TO-92
Essence: Shunt regulator
Packaging/Quantity: Tape and Reel / 3000 units per reel

Specifications

  • Reference Voltage Range: 2.5V to 36V
  • Output Voltage Tolerance: ±1%
  • Operating Current Range: 80µA to 100mA
  • Dropout Voltage: 0.4V (typical)
  • Temperature Coefficient: 50ppm/°C (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AP431AVL-A features a three-pin configuration:

  1. Anode (A): Connected to the positive terminal of the input voltage.
  2. Cathode (K): Connected to the negative terminal of the input voltage and the ground reference.
  3. Adjust (ADJ): Connected to an external resistor divider network to set the desired output voltage.

Functional Features

  • Provides a stable and precise reference voltage for various applications.
  • Adjustable output voltage allows flexibility in system design.
  • Low dropout voltage ensures efficient operation even with small input-output differentials.
  • Excellent line and load regulation characteristics.
  • Built-in current limiting and thermal shutdown protection.

Advantages

  • High accuracy and stability in voltage regulation.
  • Wide range of adjustable output voltages.
  • Low power consumption.
  • Compact TO-92 package for easy integration into circuit designs.
  • Cost-effective solution for voltage reference applications.

Disadvantages

  • Limited maximum output current capability.
  • Requires an external resistor divider network for voltage adjustment.
  • Sensitivity to temperature changes may require additional compensation circuitry in certain applications.

Working Principles

The AP431AVL-A is a shunt regulator that operates by comparing the reference voltage (set by the external resistor divider network) with the internal reference voltage. It adjusts the current flowing through the cathode terminal to maintain a stable output voltage. By controlling the current, it compensates for variations in load and input voltage, providing a regulated output voltage.

Detailed Application Field Plans

The AP431AVL-A finds applications in various fields, including:

  1. Power Supplies: Provides voltage regulation in linear power supplies.
  2. Battery Charging Systems: Ensures accurate charging voltage for batteries.
  3. Instrumentation: Used as a voltage reference in measurement equipment.
  4. Audio Amplifiers: Maintains precise biasing voltages for audio amplification circuits.
  5. Automotive Electronics: Provides stable voltage references for automotive systems.

Detailed and Complete Alternative Models

  1. LM431: Similar shunt regulator with adjustable output voltage.
  2. TL431: Programmable precision reference with similar functionality.
  3. LT1634: Precision voltage reference with low temperature coefficient.
  4. REF02: High-precision voltage reference with low noise characteristics.

Note: This list is not exhaustive and other alternative models may exist.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät AP431AVL-A :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of AP431AVL-A in technical solutions:

  1. Q: What is AP431AVL-A? A: AP431AVL-A is a voltage reference diode that provides a stable voltage output for various applications.

  2. Q: What is the voltage range of AP431AVL-A? A: The voltage range of AP431AVL-A is typically between 2.5V and 36V.

  3. Q: How does AP431AVL-A work? A: AP431AVL-A operates by comparing the input voltage with an internal reference voltage and adjusting its output accordingly.

  4. Q: What are the typical applications of AP431AVL-A? A: AP431AVL-A is commonly used in power supplies, battery chargers, voltage regulators, and other electronic circuits requiring precise voltage references.

  5. Q: Can AP431AVL-A be used in both AC and DC circuits? A: Yes, AP431AVL-A can be used in both AC and DC circuits as long as the voltage requirements are within its specified range.

  6. Q: Does AP431AVL-A require any external components for operation? A: Yes, AP431AVL-A requires a few external components such as resistors and capacitors to set the desired output voltage and improve stability.

  7. Q: Is AP431AVL-A suitable for high-temperature environments? A: Yes, AP431AVL-A is designed to operate reliably in high-temperature environments, making it suitable for various industrial applications.

  8. Q: Can AP431AVL-A handle high current loads? A: AP431AVL-A has a maximum current rating of typically 100mA, so it is suitable for low to moderate current loads.

  9. Q: Is AP431AVL-A available in different package options? A: Yes, AP431AVL-A is available in various package options such as SOT-23 and TO-92, allowing flexibility in design and integration.

  10. Q: Where can I find more information about the specifications and application notes of AP431AVL-A? A: You can refer to the datasheet provided by the manufacturer or visit their official website for detailed information on the specifications and application notes of AP431AVL-A.