RT9198-18GBG

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Overcurrent protection

Package: SOT-23-5

Essence: The RT9198-18GBG is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate and maintain a constant voltage level.

Packaging/Quantity: The RT9198-18GBG is available in a SOT-23-5 package, which is a small surface-mount package. It is typically sold in reels or tubes containing multiple units.

Specifications

The RT9198-18GBG has the following specifications:

• Input Voltage Range: 2.5V - 6V
• Output Voltage Range: 1.8V
• Dropout Voltage: 200mV at 100mA
• Output Current: Up to 300mA
• Quiescent Current: 60µA
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The RT9198-18GBG has a total of five pins arranged as follows:

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Pin Configuration: 1. VIN (Input Voltage) 2. GND (Ground) 3. NC (No Connection) 4. VOUT (Output Voltage) 5. EN (Enable)

Functional Features

• Low Dropout Voltage: The RT9198-18GBG exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 300mA, this voltage regulator can handle a wide range of load requirements.
• Adjustable Output Voltage: The output voltage can be adjusted to the desired level using external resistors.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
• Overcurrent Protection: The RT9198-18GBG includes overcurrent protection, safeguarding the circuit from excessive current flow.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - High output current capability allows for versatile applications. - Adjustable output voltage provides flexibility. - Thermal shutdown and overcurrent protection enhance reliability.

Disadvantages: - Limited output voltage options (fixed at 1.8V). - Not suitable for high-power applications.

Working Principles

The RT9198-18GBG operates as a linear voltage regulator. It regulates the output voltage by comparing it with an internal reference voltage. Any difference between the two voltages is amplified and used to control the pass transistor, adjusting its resistance to maintain a constant output voltage.

Detailed Application Field Plans

The RT9198-18GBG finds applications in various electronic devices that require stable voltage regulation. Some common application fields include: - Battery-powered devices - Portable consumer electronics - Embedded systems - Communication equipment - Industrial automation

Detailed and Complete Alternative Models

• RT9198-18GBG: 1.8V output voltage
• RT9198-25GBG: 2.5V output voltage
• RT9198-33GBG: 3.3V output voltage
• RT9198-50GBG: 5.0V output voltage

These alternative models provide different output voltage options while sharing similar characteristics and features with the RT9198-18GBG.

In conclusion, the RT9198-18GBG is a voltage regulator IC that offers stable output voltage with low dropout. Its adjustable output voltage, high output current capability, and built-in protection features make it suitable for various electronic applications.