RT9073-33GU5

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 RT9073-33GU5 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 RT9073-33GU5 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

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

Detailed Pin Configuration

The RT9073-33GU5 has five pins arranged as follows:

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Pin 1: Enable (EN) - Controls the regulator's output state. Connects to logic high (≥1.2V) to enable the output.

Pin 2: Ground (GND) - Connected to the ground reference of the circuit.

Pin 3: Feedback (FB) - Provides feedback for regulating the output voltage. Connects to an external resistor divider network.

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

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

Functional Features

• Low dropout voltage: The RT9073-33GU5 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 300mA, the IC can power a wide range of electronic components.
• Adjustable output voltage: The output voltage can be adjusted within the specified range using an external resistor divider network.
• Thermal shutdown protection: The IC includes thermal shutdown protection, which prevents damage due to excessive temperature.
• Overcurrent protection: The RT9073-33GU5 incorporates overcurrent protection to safeguard against 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 input voltage range (2.5V - 6V). - Quiescent current of 85µA may affect battery-powered devices with strict power consumption requirements.

Working Principles

The RT9073-33GU5 operates as a linear voltage regulator. It compares the feedback voltage at the FB pin with a reference voltage to control the output voltage. By adjusting the resistance values in the external resistor divider network connected to the FB pin, the desired output voltage can be set. The IC regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor, ensuring a stable output regardless of variations in the input voltage.

Detailed Application Field Plans

The RT9073-33GU5 finds applications in various electronic devices that require a regulated power supply. Some common application fields include: - Battery-powered devices - Portable audio players - Mobile phones - Digital cameras - Wireless communication systems - Embedded systems

Detailed and Complete Alternative Models

• RT9073-33GB: Same specifications as RT9073-33GU5, but available in a SOT-23-6 package.
• RT9073-33GV: Same specifications as RT9073-33GU5, but available in a SOT-23-3 package.
• RT9073-33GQ: Same specifications as RT9073-33GU5, but available in a DFN-6 package.

These alternative models provide similar functionality and performance to the RT9073-33GU5, but with different package options to suit specific design requirements.

In conclusion, the RT9073-33GU5 is a voltage regulator IC that offers low dropout voltage, high output current capability, and adjustable output voltage. It provides thermal shutdown and overcurrent protection, making it suitable for various electronic devices. Its compact SOT-23-5 package and wide range of applications make it a versatile choice for voltage regulation needs.