RT9161A-35GG

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Excellent line and load regulation - Thermal shutdown protection - Short circuit current limit - Reverse polarity protection

Package: SOT-223

Essence: The RT9161A-35GG is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate the voltage and ensure proper functioning of the circuit.

Packaging/Quantity: The RT9161A-35GG is available in a SOT-223 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.5V - 6.0V
• Output Voltage: 3.5V
• Dropout Voltage: 200mV @ 100mA
• Output Current: Up to 1.5A
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Quiescent Current: 80μA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The RT9161A-35GG has the following pin configuration:

```

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| | --| VIN GND |-- --| VOUT EN |-- |___________| ```

• VIN: Input voltage
• GND: Ground
• VOUT: Output voltage
• EN: Enable pin (active high)

Functional Features

• Low dropout voltage: The RT9161A-35GG can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• High output current capability: It can provide a maximum output current of 1.5A, making it suitable for powering various electronic components.
• Excellent line and load regulation: The IC ensures a stable output voltage even with variations in input voltage and load conditions.
• Thermal shutdown protection: It incorporates a thermal shutdown mechanism to prevent overheating and damage to the device.
• Short circuit current limit: The IC limits the current in case of a short circuit, protecting the circuit from damage.
• Reverse polarity protection: It is designed to withstand reverse polarity connection without causing any harm.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - High output current capability allows for versatile applications. - Excellent line and load regulation provides stable voltage output. - Thermal shutdown protection prevents overheating and damage. - Short circuit current limit protects the circuit from damage. - Reverse polarity protection safeguards against incorrect connections.

Disadvantages: - Limited input voltage range (2.5V - 6.0V). - Quiescent current of 80μA may affect battery life in low-power applications.

Working Principles

The RT9161A-35GG operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. When the input voltage exceeds the desired output voltage, the pass transistor adjusts its resistance to maintain a stable output voltage. The enable pin can be used to turn the regulator on or off.

Detailed Application Field Plans

The RT9161A-35GG is widely used in various electronic devices that require a stable voltage supply. Some common application fields include:

1. Mobile Devices: Smartphones, tablets, portable media players, etc.
2. Computer Peripherals: USB hubs, external hard drives, printers, etc.
3. Consumer Electronics: Digital cameras, gaming consoles, audio/video equipment, etc.
4. Automotive Electronics: Car infotainment systems, GPS devices, dashboard displays, etc.
5. Industrial Equipment: Control systems, sensors, motor drivers, etc.

Detailed and Complete Alternative Models

1. RT9161A-33GG: Output voltage of 3.3V
2. RT9161A-50GG: Output voltage of 5.0V
3. RT9161B-35GG: Improved version with lower dropout voltage
4. RT9161C-35GG: Enhanced version with higher output current capability

These alternative models provide similar functionality but may have different specifications or additional features to suit specific application requirements.

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