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PQ1KA903MZPH

PQ1KA903MZPH Description

The PQ1KA903MZPH is a linear regulator IC designed by Sharp Microelectronics, featuring a fixed 9V output voltage and a maximum output current of 300mA. This device is housed in a compact SOT23L-6 package, making it suitable for surface mount applications. It operates with a maximum input voltage of 15V and offers a low quiescent current of 800 µA, ensuring efficient power consumption. The regulator is equipped with an enable control feature, allowing users to turn the regulator on and off as needed. It also includes over-current and over-temperature protection features to safeguard against potential damage, enhancing its reliability and robustness.

PQ1KA903MZPH Features

• Low Quiescent Current: The PQ1KA903MZPH features a low quiescent current of 800 µA, which is ideal for applications where power efficiency is critical.
• High PSRR: With a power supply rejection ratio (PSRR) of 55dB at 120Hz, the regulator effectively filters out noise from the input power supply, ensuring a clean and stable output voltage.
• Fixed Output Voltage: The regulator provides a fixed output voltage of 9V, eliminating the need for external voltage setting components and simplifying the design process.
• Enable Control: The enable feature allows for dynamic control of the regulator's operation, enabling power-saving modes and enhancing system flexibility.
• Protection Features: Over-current and over-temperature protection features safeguard the regulator from damage, ensuring reliable operation under various conditions.
• Compact Package: The SOT23L-6 package is compact and suitable for surface mount applications, making it ideal for space-constrained designs.
• Low Dropout Voltage: The regulator has a maximum dropout voltage of 0.7V at 300mA, allowing it to maintain regulation even with a small difference between input and output voltages.

PQ1KA903MZPH Applications

The PQ1KA903MZPH is well-suited for a variety of applications where a stable and efficient power supply is required. Its fixed 9V output and 300mA current capability make it ideal for powering small electronic devices, such as:

• Consumer Electronics: Portable devices, audio equipment, and other gadgets that require a stable 9V supply.
• Industrial Equipment: Sensors, controllers, and other industrial devices that need reliable power regulation.
• Telecommunications: Base stations, repeaters, and other telecom equipment that require efficient power management.
• Automotive Applications: In-car electronics, such as infotainment systems and control modules, where space and power efficiency are crucial.

Conclusion of PQ1KA903MZPH

The PQ1KA903MZPH from Sharp Microelectronics is a versatile and efficient linear regulator IC, offering a fixed 9V output and a maximum output current of 300mA. Its low quiescent current, high PSRR, and enable control feature make it an excellent choice for applications requiring power efficiency and dynamic control. The compact SOT23L-6 package and low dropout voltage further enhance its suitability for space-constrained designs. Despite being marked as obsolete, the PQ1KA903MZPH remains a reliable option for applications where its unique features and performance benefits are required.