RT9193-28GB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short circuit current limit - Reverse battery protection

Package: SOT-23-5

Essence: The RT9193-28GB 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 stabilize the voltage supply.

Packaging/Quantity: The RT9193-28GB is available in a SOT-23-5 package, which consists of a small plastic body with five leads. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.5V to 6V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 300mA
• Output Current: Up to 300mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT9193-28GB has five pins arranged as follows:

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Pin 1: Enable (EN) - Controls the regulator's output state. Connects to ground to disable the output.

Pin 2: Feedback (FB) - Provides feedback for regulating the output voltage. Connects to an external resistor divider network.

Pin 3: Ground (GND) - Connected to the ground reference of the system.

Pin 4: Output (OUT) - Provides the regulated output voltage.

Pin 5: Input (IN) - Connects to the input voltage source.

Functional Features

• Low dropout voltage ensures stable output even when the input voltage is close to the desired output voltage.
• High output current capability allows it to power a wide range of electronic components.
• Adjustable output voltage provides flexibility in various applications.
• Thermal shutdown protection prevents the IC from overheating and damaging itself.
• Short circuit current limit protects the IC and connected components from excessive current flow.
• Reverse battery protection safeguards against reverse polarity connection.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - Wide input voltage range allows compatibility with different power sources. - Adjustable output voltage provides versatility in various applications. - Thermal shutdown protection enhances reliability and safety. - Reverse battery protection prevents damage due to incorrect polarity connection.

Disadvantages: - Limited output current compared to higher-power regulators. - SOT-23-5 package may require surface-mount soldering skills for installation.

Working Principles

The RT9193-28GB operates as a linear voltage regulator. It uses a pass transistor to regulate the output voltage based on the feedback received from the FB pin. The internal circuitry compares the feedback voltage with a reference voltage, adjusting the pass transistor's resistance to maintain a stable output voltage. The dropout voltage is minimized by utilizing a low-resistance pass transistor.

Detailed Application Field Plans

The RT9193-28GB can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - Communication systems - Industrial control systems - Automotive electronics - Medical equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the RT9193-28GB include: - LM1117-3.3: A popular 3.3V voltage regulator IC with adjustable output voltage. - MCP1700: Low dropout voltage regulator available in various fixed output voltage options. - LT1763: High-performance, low dropout linear regulator with adjustable output voltage.

These alternative models can be considered based on specific requirements and compatibility with the application.