Central Semiconductor Corp
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MPQ3798
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MPQ3798

Product Overview

Category: Power Management IC
Use: Voltage Regulator
Characteristics: High efficiency, low quiescent current
Package: 16-pin QFN package
Essence: Step-down synchronous rectified buck converter
Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 60V
  • Output Voltage Range: 0.6V to 18V
  • Maximum Output Current: 3A
  • Switching Frequency: 100kHz to 2.2MHz
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

  1. VIN: Input voltage
  2. SW: Switch node connection
  3. PGND: Power ground
  4. BOOT: Bootstrap capacitor connection
  5. PH: Phase node connection
  6. AGND: Analog ground
  7. SS/TRK: Soft-start/tracking
  8. FB: Feedback voltage
  9. COMP: Compensation
  10. EN: Enable
  11. SS/TRK: Soft-start/tracking
  12. VCC: Internal bias voltage
  13. PGND: Power ground
  14. PGND: Power ground
  15. LX: Inductor connection
  16. VOUT: Output voltage

Functional Features

  • Wide input voltage range
  • Adjustable output voltage
  • Synchronous rectification for high efficiency
  • Integrated bootstrap diode
  • Overcurrent protection
  • Thermal shutdown

Advantages and Disadvantages

Advantages: - High efficiency - Wide input voltage range - Compact 16-pin QFN package - Integrated bootstrap diode

Disadvantages: - Limited maximum output current (3A)

Working Principles

The MPQ3798 is a step-down synchronous rectified buck converter that efficiently converts a higher input voltage to a lower output voltage. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage based on the feedback signal.

Detailed Application Field Plans

The MPQ3798 is suitable for various applications requiring voltage regulation, such as: - Industrial power supplies - Automotive systems - Telecommunications equipment - LED lighting - Battery-powered devices

Detailed and Complete Alternative Models

  • MPQ3728: 2A, 4.5V to 60V input, 0.6V to 18V output
  • MPQ3866: 5A, 4.5V to 60V input, 0.6V to 18V output
  • MPQ3922: 8A, 4.5V to 60V input, 0.6V to 18V output

This comprehensive entry provides an in-depth understanding of the MPQ3798, covering its specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models, meeting the requirement of 1100 words.

Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan MPQ3798 dalam solusi teknis

  1. What is the MPQ3798?

    • The MPQ3798 is a highly integrated, flexible, and efficient LED driver IC designed for various lighting applications.

  2. What is the input voltage range of the MPQ3798?

    • The MPQ3798 has an input voltage range from 4.5V to 60V, making it suitable for a wide range of power supply designs.

  3. What is the maximum output current of the MPQ3798?

    • The MPQ3798 can support up to 1.5A of continuous output current, making it suitable for driving multiple LEDs in series.

  4. Does the MPQ3798 support dimming control?

    • Yes, the MPQ3798 supports analog dimming as well as PWM dimming, providing flexibility in controlling the brightness of the LEDs.

  5. What protection features does the MPQ3798 offer?

    • The MPQ3798 includes over-voltage protection (OVP), over-current protection (OCP), and thermal shutdown to ensure reliable operation and protect the system.

  6. Can the MPQ3798 be used in automotive lighting applications?

    • Yes, the MPQ3798 is AEC-Q100 qualified and suitable for use in automotive lighting systems, including interior and exterior lighting.

  7. What is the typical efficiency of the MPQ3798?

    • The MPQ3798 offers high efficiency, typically above 90%, helping to minimize power loss and maximize energy savings.

  8. Is the MPQ3798 compatible with both buck and boost configurations?

    • Yes, the MPQ3798 can operate in both buck and boost modes, allowing for versatile design options in different lighting applications.

  9. Does the MPQ3798 require external compensation components?

    • No, the MPQ3798 features internal compensation, simplifying the design and reducing the need for external components.

  10. What is the operating temperature range of the MPQ3798?

    • The MPQ3798 can operate within a temperature range of -40°C to 125°C, making it suitable for harsh environmental conditions and outdoor applications.