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PQ3RF33

PQ3RF33 Description

The PQ3RF33 is a linear regulator IC designed by Sharp Microelectronics, featuring a fixed output voltage of 3.3V and a maximum output current of 3.5A. This device is housed in a TO220-4 package, making it suitable for through-hole mounting. Despite its status as an obsolete product, the PQ3RF33 remains a robust solution for power management applications requiring a stable and reliable voltage regulation.

PQ3RF33 Features

• Output Type: Fixed, ensuring a consistent 3.3V output voltage.
• Input Voltage Range: Capable of handling a maximum input voltage of 10V, providing flexibility in power supply design.
• Output Current: Delivers a robust 3.5A of output current, suitable for demanding applications.
• Single Regulator: Simplifies circuit design with a single regulator.
• Positive Output Configuration: Ensures a positive voltage output, ideal for most electronic systems.
• Low Dropout Voltage: A maximum dropout voltage of 0.5V at 3A ensures high efficiency even at low input-to-output voltage differentials.
• Low Quiescent Current: Consumes only 10 mA in quiescent state, minimizing power loss.
• High PSRR: Achieves 55dB at 120Hz, effectively reducing noise and ripple.
• Protection Features: Includes over-current and over-temperature protection, safeguarding the device and connected circuits.
• Enable Control Feature: Allows for dynamic control of the regulator's operation.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for a wide range of environmental conditions.
• Packaging: Supplied in a tube package, facilitating easy handling and storage.

PQ3RF33 Applications

The PQ3RF33 is ideal for applications requiring a stable 3.3V supply with high current capacity. Its low dropout voltage and high PSRR make it particularly suitable for:

• Embedded Systems: Providing a stable power supply for microcontrollers and other low-voltage components.
• Industrial Equipment: Ensuring reliable operation in harsh environments.
• Telecommunications: Supplying power to various modules within communication systems.
• Consumer Electronics: Powering devices that require a consistent voltage and high current, such as routers, modems, and set-top boxes.

Conclusion of PQ3RF33

The PQ3RF33 from Sharp Microelectronics is a versatile linear regulator that offers a balance of performance and reliability. Its fixed 3.3V output and 3.5A current capacity make it suitable for a wide range of applications. The low dropout voltage and high PSRR ensure efficient and clean power delivery, while protection features safeguard against over-current and over-temperature conditions. Although marked as obsolete, the PQ3RF33 remains a valuable component for designers seeking a dependable power management solution in through-hole form.