RT9018B-25GQW

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 - Short-circuit protection

Package: QFN (Quad Flat No-leads)

Essence: The RT9018B-25GQW is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: The RT9018B-25GQW is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 1.2V to 3.6V
• Dropout Voltage: 200mV at 300mA
• Output Current: Up to 600mA
• Quiescent Current: 75μA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The RT9018B-25GQW has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. FB: Feedback pin
5. VOUT: Output voltage pin

Functional Features

• Low Dropout Voltage: The RT9018B-25GQW has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 600mA, the RT9018B-25GQW can power a wide range of electronic devices.
• Adjustable Output Voltage: The output voltage can be adjusted within the range of 1.2V to 3.6V, providing flexibility for different applications.
• Thermal Shutdown Protection: The IC includes thermal shutdown protection, which prevents damage due to excessive heat.
• Overcurrent Protection: The RT9018B-25GQW features overcurrent protection, safeguarding the circuit from excessive current flow.
• Short-Circuit Protection: In case of a short circuit, the IC automatically shuts down to protect itself and the connected devices.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for powering various devices - Adjustable output voltage provides flexibility - Built-in protection features enhance reliability

Disadvantages: - Limited input voltage range (2.5V to 5.5V) - Quiescent current may be relatively high compared to other voltage regulators

Working Principles

The RT9018B-25GQW is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB) with a reference voltage to adjust the pass transistor's resistance. This adjustment maintains a stable output voltage regardless of changes in the input voltage or load conditions.

Detailed Application Field Plans

The RT9018B-25GQW can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronic devices - IoT (Internet of Things) devices - Consumer electronics - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the RT9018B-25GQW include: - LM1117-3.3 - LT1763-3.3 - MCP1700-3302E/TO

These models offer similar functionality and can be considered as alternatives depending on specific requirements and availability.

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