Richtek USA Inc.
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RT9819G-28GU3
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RT9819G-28GU3

Product Overview

Category

RT9819G-28GU3 belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

  • Package: The RT9819G-28GU3 comes in a compact package, making it suitable for space-constrained applications.
  • Essence: This voltage regulator provides stable and reliable voltage output.
  • Packaging/Quantity: The RT9819G-28GU3 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

The specifications of the RT9819G-28GU3 are as follows:

  • Input Voltage Range: 2.5V - 6V
  • Output Voltage: 2.8V
  • Output Current: Up to 300mA
  • Dropout Voltage: 200mV (typical)
  • Quiescent Current: 60µA (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT9819G-28GU3 has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. VOUT: Output voltage pin
  4. EN: Enable pin (optional)

Functional Features

The RT9819G-28GU3 offers the following functional features:

  • Low dropout voltage: The regulator maintains a low dropout voltage, ensuring efficient power conversion even when the input voltage is close to the desired output voltage.
  • Low quiescent current: The device consumes minimal current when in standby mode, reducing power consumption and extending battery life.
  • Overcurrent protection: The RT9819G-28GU3 incorporates overcurrent protection, safeguarding the circuit from excessive current flow.
  • Thermal shutdown protection: In case of excessive temperature, the regulator automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages

  • Compact package suitable for space-constrained applications.
  • Stable and reliable voltage output.
  • Low dropout voltage and quiescent current for efficient power conversion.
  • Overcurrent and thermal shutdown protection for circuit safety.

Disadvantages

  • Limited output current capacity (up to 300mA).

Working Principles

The RT9819G-28GU3 operates based on a linear voltage regulation principle. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage.

Detailed Application Field Plans

The RT9819G-28GU3 finds applications in various electronic devices, including but not limited to: - Mobile phones - Tablets - Portable media players - Wearable devices - IoT devices

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the RT9819G-28GU3 are: - LM1117-2.8 - MCP1700-2802E/TO - TPS78228DDCR

These models offer similar voltage regulation capabilities and can be used as substitutes depending on specific requirements.

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Перечислите 10 распространенных вопросов и ответов, связанных с применением RT9819G-28GU3 в технических решениях.

Sure! Here are 10 common questions and answers related to the application of RT9819G-28GU3 in technical solutions:

  1. Q: What is the RT9819G-28GU3? A: The RT9819G-28GU3 is a voltage regulator IC (integrated circuit) that provides a fixed output voltage of 2.8V.

  2. Q: What are the typical applications of RT9819G-28GU3? A: The RT9819G-28GU3 is commonly used in various electronic devices, such as mobile phones, tablets, portable media players, and other battery-powered devices.

  3. Q: How does the RT9819G-28GU3 regulate voltage? A: The RT9819G-28GU3 uses a feedback mechanism to maintain a constant output voltage despite changes in input voltage or load conditions.

  4. Q: What is the input voltage range for RT9819G-28GU3? A: The input voltage range for the RT9819G-28GU3 is typically between 2.5V and 6V.

  5. Q: What is the maximum output current of RT9819G-28GU3? A: The maximum output current of the RT9819G-28GU3 is typically 300mA.

  6. Q: Can the RT9819G-28GU3 handle high temperatures? A: Yes, the RT9819G-28GU3 is designed to operate reliably at high temperatures, typically up to 125°C.

  7. Q: Does the RT9819G-28GU3 require any external components for operation? A: Yes, the RT9819G-28GU3 requires a few external components, such as input and output capacitors, to ensure stability and proper operation.

  8. Q: Can the RT9819G-28GU3 be used in battery charging applications? A: No, the RT9819G-28GU3 is not designed for battery charging applications. It is primarily used for voltage regulation purposes.

  9. Q: Is the RT9819G-28GU3 available in different package options? A: Yes, the RT9819G-28GU3 is available in various package options, such as SOT-23 and DFN, to suit different PCB layout requirements.

  10. Q: Where can I find more detailed information about the RT9819G-28GU3? A: You can refer to the datasheet provided by the manufacturer or visit their official website for more detailed information on the RT9819G-28GU3.