Alpha & Omega Semiconductor Inc.
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AO4862
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AO4862

Product Overview

Category: Integrated Circuit
Use: Power Management IC
Characteristics: High efficiency, compact design
Package: QFN-16
Essence: Regulates power supply
Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 36V
  • Output Voltage Range: 0.6V to 24V
  • Maximum Output Current: 3A
  • Efficiency: Up to 95%
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

  1. VIN (Pin 1) - Input voltage
  2. PGND (Pin 2) - Power ground
  3. SW (Pin 3) - Switch node
  4. FB (Pin 4) - Feedback voltage
  5. EN (Pin 5) - Enable control
  6. SS/TRK (Pin 6) - Soft-start/tracking
  7. COMP (Pin 7) - Compensation
  8. VCC (Pin 8) - Control circuitry voltage
  9. BOOT (Pin 9) - Bootstrap capacitor connection
  10. PH (Pin 10) - Phase compensation
  11. LGATE (Pin 11) - Low-side gate driver output
  12. PGND (Pin 12) - Power ground
  13. AGND (Pin 13) - Analog ground
  14. PGND (Pin 14) - Power ground
  15. PGND (Pin 15) - Power ground
  16. PGND (Pin 16) - Power ground

Functional Features

  • Wide input voltage range for versatile applications
  • High efficiency for reduced power loss
  • Integrated protection features (overcurrent, overvoltage, thermal shutdown)
  • Adjustable output voltage and current limit
  • Soft-start and tracking for controlled start-up

Advantages and Disadvantages

Advantages: - Compact package size - High efficiency - Versatile input/output voltage range

Disadvantages: - Higher cost compared to traditional linear regulators - Requires careful PCB layout for optimal performance

Working Principles

The AO4862 is a synchronous step-down DC-DC converter that regulates the output voltage by adjusting the duty cycle of the internal switches. It utilizes pulse-width modulation (PWM) to control the power delivered to the load, ensuring efficient power conversion.

Detailed Application Field Plans

The AO4862 is suitable for various applications including: - Industrial power supplies - Automotive electronics - Telecommunications equipment - LED lighting systems - Battery-powered devices

Detailed and Complete Alternative Models

  1. AO4861 - Similar specifications with different pin configuration
  2. AO4863 - Higher output current capability with similar features
  3. AO4864 - Lower input voltage range with comparable efficiency

Note: The alternative models listed above are provided as examples and may not cover all available alternatives in the market.

This comprehensive entry provides an in-depth understanding of the AO4862, covering its specifications, functional features, application field plans, and alternative models, making it a valuable resource for professionals and enthusiasts in the field of power management ICs.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AO4862 v technických řešeních

  1. What is AO4862?

    • AO4862 is a high-performance, low-dropout linear regulator designed for use in various technical solutions.

  2. What is the input voltage range of AO4862?

    • The input voltage range of AO4862 is typically from 2.7V to 5.5V.

  3. What is the output voltage range of AO4862?

    • The output voltage range of AO4862 is adjustable from 0.8V to 3.3V.

  4. What is the maximum output current of AO4862?

    • AO4862 can provide a maximum output current of up to 500mA.

  5. What are the typical applications of AO4862?

    • AO4862 is commonly used in battery-powered devices, portable equipment, and other applications requiring a regulated power supply.

  6. What is the dropout voltage of AO4862?

    • The dropout voltage of AO4862 is typically around 200mV at full load.

  7. Does AO4862 have built-in thermal shutdown protection?

    • Yes, AO4862 is equipped with built-in thermal shutdown protection to prevent overheating.

  8. Is AO4862 available in different package options?

    • Yes, AO4862 is available in various package options, including SOT-23 and SC70.

  9. Can AO4862 operate in a wide temperature range?

    • Yes, AO4862 is designed to operate in a wide temperature range, typically from -40°C to 85°C.

  10. Is AO4862 suitable for low-power applications?

    • Yes, AO4862 is well-suited for low-power applications due to its low quiescent current and high efficiency.

Feel free to ask if you need further information on any of these questions!