RT9991GQV

Product Overview

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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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací RT9991GQV v technických řešeních

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.
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.
What are the typical applications for RT9991GQV?
- Typical applications for RT9991GQV include portable devices, consumer electronics, industrial equipment, and distributed power systems.
What is the efficiency of RT9991GQV?
- RT9991GQV offers high efficiency, typically up to 95%, which makes it suitable for battery-powered applications.
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.
Does RT9991GQV have built-in protection features?
- Yes, RT9991GQV includes over-temperature protection, short-circuit protection, and thermal shutdown to ensure reliable operation.
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.
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.
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.
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.