Alpha & Omega Semiconductor Inc.
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AO4482L

AO4482L

Product Overview

Category: Integrated Circuit
Use: Power Management
Characteristics: High efficiency, low power consumption
Package: SOP-8
Essence: Power MOSFET and PWM controller
Packaging/Quantity: Tape & Reel, 2500 units

Specifications

  • Input Voltage: 4.5V to 18V
  • Output Current: Up to 3A
  • Switching Frequency: 300kHz
  • Operating Temperature: -40°C to 85°C

Detailed Pin Configuration

  1. VIN (Input Voltage)
  2. GND (Ground)
  3. VCC (Controller Supply Voltage)
  4. COMP (Compensation)
  5. FB (Feedback)
  6. EN (Enable)
  7. SW (Switch Node)
  8. PGND (Power Ground)

Functional Features

  • Integrated high-side and low-side MOSFETs
  • Adjustable output voltage
  • Overcurrent protection
  • Thermal shutdown protection
  • Soft-start function

Advantages and Disadvantages

Advantages: - Compact size - High efficiency - Wide input voltage range

Disadvantages: - Limited output current compared to some alternatives - Requires external compensation components

Working Principles

The AO4482L integrates a power MOSFET and a PWM controller to regulate the output voltage. The controller adjusts the duty cycle of the internal MOSFETs based on the feedback signal to maintain the desired output voltage.

Detailed Application Field Plans

The AO4482L is suitable for various applications including: - Point-of-load converters - Battery-powered devices - LED lighting - Industrial automation

Detailed and Complete Alternative Models

  1. AO4468L
    • Similar specifications and package
    • Lower output current capability
  2. AO4435L
    • Higher output current capability
    • Different package (DFN-8)

In conclusion, the AO4482L is a versatile integrated circuit designed for efficient power management in various applications. Its compact size and high efficiency make it an ideal choice for space-constrained designs requiring reliable power regulation.

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10個與AO4482L在技術方案中應用相關的常見問題與解答

  1. What is AO4482L?

    • AO4482L is a dual N-channel MOSFET with low on-resistance and high current-handling capability, commonly used in power management and switching applications.

  2. What is the maximum drain-source voltage rating of AO4482L?

    • The maximum drain-source voltage rating of AO4482L is typically 30V.

  3. What is the typical on-resistance of AO4482L?

    • The typical on-resistance of AO4482L is around 10mΩ.

  4. What are the typical applications of AO4482L?

    • AO4482L is commonly used in battery protection circuits, load switches, power management in portable devices, and DC-DC converters.

  5. What is the maximum continuous drain current of AO4482L?

    • The maximum continuous drain current of AO4482L is typically around 12A.

  6. Is AO4482L suitable for high-frequency switching applications?

    • Yes, AO4482L is suitable for high-frequency switching due to its low on-resistance and fast switching characteristics.

  7. Does AO4482L have built-in ESD protection?

    • Yes, AO4482L is designed with built-in ESD protection, making it more robust in handling electrostatic discharge events.

  8. What is the operating temperature range of AO4482L?

    • The operating temperature range of AO4482L is typically -55°C to 150°C, making it suitable for a wide range of environments.

  9. Can AO4482L be used in automotive applications?

    • Yes, AO4482L is often used in automotive electronics due to its reliability and performance under harsh conditions.

  10. Are there any recommended layout considerations for using AO4482L in a PCB design?

    • Yes, it's recommended to minimize parasitic inductance and ensure proper thermal management when designing the PCB layout for AO4482L to optimize its performance.