RT9193-18GU5

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

Package: SOT-23-5

Essence: The RT9193-18GU5 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 RT9193-18GU5 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 - 6V
• Output Voltage Range: 1.8V
• Dropout Voltage: 200mV @ 300mA
• Output Current: Up to 300mA
• Quiescent Current: 75μA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT9193-18GU5 has five pins arranged as follows:

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

Functional Features

1. Low Dropout Voltage: The RT9193-18GU5 exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.

2. High Output Current Capability: With a maximum output current of 300mA, the RT9193-18GU5 can power a wide range of electronic components and circuits.

3. Adjustable Output Voltage: The output voltage of the RT9193-18GU5 can be adjusted to a precise value using external resistors, providing flexibility in various applications.

4. Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature by disabling the regulator temporarily.

5. Short-Circuit Current Limit: The RT9193-18GU5 features a short-circuit current limit that protects the device from excessive current flow during a short circuit, ensuring its longevity.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for versatile applications - Adjustable output voltage provides flexibility - Thermal shutdown protection prevents damage from overheating - Short-circuit current limit enhances device durability

Disadvantages: - Limited output voltage options (fixed at 1.8V) - Requires external resistors for output voltage adjustment

Working Principles

The RT9193-18GU5 operates as a linear voltage regulator. It regulates the output voltage by comparing the reference voltage with the feedback voltage obtained from a voltage divider network. The internal circuitry adjusts the pass transistor's resistance to maintain a stable output voltage despite variations in the input voltage and load conditions.

Detailed Application Field Plans

The RT9193-18GU5 finds applications in various fields, including but not limited to: 1. Portable electronic devices (e.g., smartphones, tablets) 2. Battery-powered systems 3. Automotive electronics 4. Industrial control systems 5. Medical equipment 6. Communication devices

Detailed and Complete Alternative Models

1. LM1117-1.8: A popular alternative with similar specifications and pin configuration.
2. MCP1700-1802: Another alternative offering low dropout voltage and adjustable output voltage.
3. TS2950CT-1.8: A cost-effective alternative with comparable characteristics.

These alternatives can be considered based on specific requirements, availability, and cost considerations.

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