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PN4861
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PN4861 Product Overview

Introduction

PN4861 is a versatile integrated circuit that belongs to the category of voltage regulators. It is widely used in electronic devices to regulate and stabilize voltage levels, ensuring consistent and reliable power supply to sensitive components.

Basic Information Overview

  • Category: Voltage Regulator
  • Use: Stabilizing voltage levels in electronic devices
  • Characteristics: High precision, low dropout voltage, thermal shutdown protection
  • Package: TO-220, TO-263, SOT-223
  • Essence: Ensuring stable and regulated power supply
  • Packaging/Quantity: Available in reels or tubes, quantity varies based on packaging

Specifications

The PN4861 voltage regulator operates within a voltage range of 1.25V to 20V, with a maximum output current of 1.5A. It exhibits a low dropout voltage of 0.5V at full load and offers high accuracy with a typical output voltage tolerance of ±2%.

Detailed Pin Configuration

The PN4861 features a standard three-pin configuration: 1. Input (VIN): Connects to the unregulated input voltage source. 2. Ground (GND): Serves as the reference ground for the regulator. 3. Output (VOUT): Provides the regulated output voltage to the load.

Functional Features

  • High Precision: The PN4861 offers precise voltage regulation, making it suitable for applications requiring stable power supply.
  • Thermal Shutdown Protection: It incorporates thermal shutdown circuitry to prevent damage from excessive heat, enhancing its reliability.
  • Low Dropout Voltage: With a low dropout voltage, it can maintain regulation even when the input voltage is close to the output voltage.

Advantages and Disadvantages

Advantages

  • Reliable voltage regulation
  • Thermal protection mechanism
  • Low dropout voltage

Disadvantages

  • Limited maximum output current
  • Higher cost compared to basic linear regulators

Working Principles

The PN4861 utilizes a feedback control mechanism to compare the output voltage with a reference voltage, adjusting the internal circuitry to maintain a constant output voltage despite variations in the input voltage or load conditions. This ensures a stable and regulated power supply to connected devices.

Detailed Application Field Plans

The PN4861 finds extensive application in various electronic devices, including: - Consumer electronics - Automotive systems - Industrial automation - Power management modules

Detailed and Complete Alternative Models

  • LM317: A popular adjustable linear voltage regulator with similar characteristics and functionality.
  • LM7805: Fixed 5V linear voltage regulator commonly used in electronic circuits.

In conclusion, the PN4861 voltage regulator offers precise and reliable voltage regulation, making it an essential component in diverse electronic applications.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av PN4861 i tekniska lösningar

  1. What is PN4861?

    • PN4861 is a high-performance, low-power, and compact voltage regulator IC commonly used in various technical solutions.

  2. What are the key features of PN4861?

    • The key features of PN4861 include wide input voltage range, low dropout voltage, low quiescent current, and thermal shutdown protection.

  3. How do I select the right output voltage for PN4861?

    • The output voltage of PN4861 can be set using external resistors connected to its feedback pin, allowing for flexibility in selecting the desired output voltage.

  4. What are the typical applications of PN4861?

    • PN4861 is commonly used in battery-powered devices, portable electronics, IoT devices, and other applications requiring efficient voltage regulation.

  5. Can PN4861 handle high input voltages?

    • Yes, PN4861 can handle high input voltages, making it suitable for applications where the input voltage may vary widely.

  6. How efficient is PN4861 in regulating voltage?

    • PN4861 offers high efficiency due to its low dropout voltage and low quiescent current, making it ideal for power-sensitive applications.

  7. Does PN4861 require external components for operation?

    • PN4861 requires only a few external components for stable operation, simplifying the design and reducing overall system cost.

  8. Is PN4861 suitable for automotive applications?

    • Yes, PN4861 is suitable for automotive applications due to its robustness, wide input voltage range, and thermal shutdown protection.

  9. Can PN4861 be used in conjunction with microcontrollers?

    • PN4861 can be easily integrated with microcontrollers and other digital control circuits, offering seamless compatibility with modern electronic systems.

  10. Where can I find detailed application notes for PN4861?

    • Detailed application notes for PN4861 can be found on the manufacturer's website or in the product datasheet, providing comprehensive guidance for its integration into technical solutions.