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PQ3RD13

PQ3RD13 Description

The PQ3RD13 is a linear voltage regulator designed by Sharp Microelectronics, featuring a fixed output voltage of 3.3V and a maximum output current of 1A. This regulator is housed in a TO220-4 package, making it suitable for through-hole mounting. Despite its obsolete status, the PQ3RD13 remains a reliable choice for applications requiring a stable power supply with a fixed output voltage.

PQ3RD13 Features

The PQ3RD13 boasts several key features that make it a robust solution for power regulation:

• Fixed Output Voltage: The regulator maintains a precise 3.3V output, ensuring consistent power delivery to connected devices.
• High Input Voltage Range: With a maximum input voltage of 20V, the PQ3RD13 can handle a wide range of input sources, providing flexibility in power supply design.
• Low Dropout Voltage: At a maximum dropout voltage of 0.5V at 500mA, the PQ3RD13 can efficiently regulate voltage even when the input voltage is close to the output voltage.
• Enable Control Feature: The enable function allows for dynamic control of the regulator's operation, enabling power savings and controlled startup sequences.
• Protection Features: Over-current and over-temperature protection ensure the regulator's longevity and reliability, safeguarding against common failure modes.
• High PSRR: A power supply rejection ratio (PSRR) of 55dB at 120Hz helps filter out noise from the input power supply, resulting in a cleaner output voltage.
• Low Quiescent Current: The regulator operates with a quiescent current of only 10mA, minimizing power consumption during normal operation.
• Moisture Sensitivity Level: With an MSL rating of 1 (Unlimited), the PQ3RD13 is suitable for a wide range of environmental conditions without requiring special handling.

PQ3RD13 Applications

The PQ3RD13 is ideal for a variety of applications where a stable 3.3V power supply is required:

• Embedded Systems: Provides a reliable power source for microcontrollers, sensors, and other low-power embedded devices.
• Communication Equipment: Ensures stable power delivery for communication modules and interfaces.
• Consumer Electronics: Suitable for powering various consumer electronic devices that require a fixed 3.3V supply.
• Industrial Control Systems: Ideal for industrial applications where a stable and reliable power supply is crucial for consistent operation.

Conclusion of PQ3RD13

Despite its obsolete status, the PQ3RD13 remains a valuable component for applications requiring a stable 3.3V power supply. Its low dropout voltage, high PSRR, and protection features make it a reliable choice for a wide range of applications. The enable control feature and low quiescent current further enhance its versatility and efficiency. While newer alternatives may be available, the PQ3RD13 continues to offer a proven solution for power regulation needs.