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RT9991GQV

RT9991GQV

Product Overview

Category

The RT9991GQV belongs to the category of voltage regulators.

Use

It is used to regulate voltage in electronic circuits and devices.

Characteristics

  • Input Voltage Range: 4.5V to 18V
  • Output Voltage Range: 0.6V to 15V
  • Package: QFN-16 (3x3mm)
  • Essence: High-efficiency synchronous step-down DC/DC converter
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Output Current: 3A
  • Switching Frequency: 2.2MHz
  • Operating Temperature Range: -40°C to 125°C
  • Efficiency: Up to 95%

Detailed Pin Configuration

The RT9991GQV has a detailed pin configuration with specific functions assigned to each pin. Please refer to the product datasheet for the detailed pinout diagram.

Functional Features

  • Integrated high-side and low-side power MOSFETs
  • Adjustable soft-start
  • Over-temperature protection
  • Short-circuit protection
  • Under-voltage lockout

Advantages and Disadvantages

Advantages

  • High efficiency
  • Wide input voltage range
  • Compact package size

Disadvantages

  • Higher switching frequency may require careful PCB layout design

Working Principles

The RT9991GQV operates on the principle of pulse-width modulation (PWM) to regulate the output voltage. It uses a feedback loop to adjust the duty cycle of the internal switches, maintaining a stable output voltage.

Detailed Application Field Plans

The RT9991GQV is suitable for various applications including: - Portable electronic devices - Networking equipment - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

  • RT9992GQV
  • RT9993GQV
  • RT9994GQV

These alternative models offer similar functionality and performance, providing flexibility in design choices.

In conclusion, the RT9991GQV is a versatile voltage regulator with high efficiency and a wide input voltage range, making it suitable for a diverse range of electronic applications.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan RT9991GQV dalam solusi teknis

  1. What is RT9991GQV?

    • RT9991GQV is a high-efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A of continuous output current from a 2.5V to 5.5V input voltage range.
  2. What are the key features of RT9991GQV?

    • The key features of RT9991GQV include integrated 120mΩ high-side and 80mΩ low-side MOSFETs, wide input voltage range, adjustable switching frequency, and over-temperature protection.
  3. What are the typical applications for RT9991GQV?

    • Typical applications for RT9991GQV include portable devices, consumer electronics, industrial equipment, and distributed power systems.
  4. What is the efficiency of RT9991GQV?

    • RT9991GQV offers high efficiency, typically up to 95%, which makes it suitable for battery-powered applications.
  5. What is the operating frequency range of RT9991GQV?

    • The operating frequency range of RT9991GQV is adjustable from 300kHz to 2.5MHz, allowing flexibility in optimizing efficiency and external component size.
  6. Does RT9991GQV have built-in protection features?

    • Yes, RT9991GQV includes over-temperature protection, short-circuit protection, and thermal shutdown to ensure reliable operation.
  7. What is the recommended input and output capacitor for RT9991GQV?

    • A 10µF ceramic capacitor is recommended for the input, and a 22µF ceramic capacitor is recommended for the output to achieve stability and performance.
  8. Can RT9991GQV operate in a wide temperature range?

    • Yes, RT9991GQV is designed to operate over a wide temperature range, typically from -40°C to 85°C, making it suitable for various environmental conditions.
  9. Is RT9991GQV suitable for automotive applications?

    • Yes, RT9991GQV is AEC-Q100 qualified and suitable for automotive applications such as infotainment systems, advanced driver-assistance systems (ADAS), and more.
  10. Where can I find detailed technical information and application notes for RT9991GQV?

    • Detailed technical information, application notes, and design resources for RT9991GQV can be found on the manufacturer's website or through their technical support channels.