PQ05RA1

Product Overview

• Category: Voltage Regulator
• Use: To regulate and stabilize voltage in electronic circuits
• Characteristics:
  • Compact size
  • High efficiency
  • Low power consumption
  • Wide input voltage range
• Package: TO-220F
• Essence: A voltage regulator that ensures a stable output voltage regardless of fluctuations in the input voltage.
• Packaging/Quantity: Available in packs of 10 units

Specifications

• Input Voltage Range: 4.5V to 18V
• Output Voltage: 3.3V
• Output Current: 500mA
• Dropout Voltage: 0.5V (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.5% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The PQ05RA1 voltage regulator has the following pin configuration:

• Pin 1: Input Voltage (VIN)
• Pin 2: Ground (GND)
• Pin 3: Output Voltage (VOUT)

Functional Features

• Voltage Regulation: The PQ05RA1 maintains a constant output voltage of 3.3V, even when the input voltage varies.
• Overcurrent Protection: It incorporates overcurrent protection to prevent damage to the circuitry in case of excessive current flow.
• Thermal Shutdown: The regulator includes a thermal shutdown feature that activates when the temperature exceeds a certain threshold, protecting it from overheating.
• Short Circuit Protection: In the event of a short circuit, the PQ05RA1 shuts down to prevent further damage.

Advantages and Disadvantages

Advantages: - Compact size allows for easy integration into various electronic devices. - High efficiency ensures minimal power loss during voltage regulation. - Wide input voltage range makes it suitable for a wide range of applications.

Disadvantages: - Limited output current capacity may not be sufficient for high-power applications. - Dropout voltage of 0.5V may result in a significant voltage drop across the regulator.

Working Principles

The PQ05RA1 utilizes a feedback mechanism to regulate the output voltage. It compares the actual output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output. When the input voltage fluctuates, the regulator automatically adjusts its internal components to compensate for the variation, ensuring a constant output voltage.

Detailed Application Field Plans

The PQ05RA1 is commonly used in various electronic devices and circuits, including:

1. Power Supplies: It is widely employed in power supply units to provide a stable voltage to sensitive components.
2. Embedded Systems: The regulator finds application in embedded systems where a stable voltage is crucial for reliable operation.
3. Consumer Electronics: It is utilized in consumer electronics such as smartphones, tablets, and portable audio players to ensure consistent power delivery.
4. Automotive Electronics: The PQ05RA1 is suitable for automotive applications, providing regulated voltage to various electronic components in vehicles.

Detailed and Complete Alternative Models

1. PQ05RD1: Similar to PQ05RA1 but with an output voltage of 5V.
2. PQ05RE1: A higher-capacity version with an output current of 1A.
3. PQ05RF1: Offers an adjustable output voltage, allowing flexibility in different applications.

These alternative models provide options for different voltage requirements and output current capacities, catering to a wider range of applications.

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