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NCP4681DMX33TCG

NCP4681DMX33TCG Description

The NCP4681DMX33TCG is a linear voltage regulator designed for applications requiring a stable 3.3V output voltage with a maximum output current of 150mA. Manufactured by onsemi, this device is part of the Power Management Integrated Circuit (PMIC) category and is housed in a 4XDFN package suitable for surface mount applications. Despite its obsolete status, the NCP4681DMX33TCG remains a reliable choice for various electronic systems due to its robust performance and low dropout voltage.

NCP4681DMX33TCG Features

• Output Type: Fixed, providing a consistent 3.3V output voltage.
• Input Voltage Range: The regulator can operate with a maximum input voltage of 5.25V, ensuring compatibility with a wide range of power sources.
• Output Current: Capable of delivering up to 150mA, making it suitable for applications requiring moderate current levels.
• Low Dropout Voltage: With a maximum dropout voltage of 0.35V at 150mA, the NCP4681DMX33TCG maintains efficiency even under varying load conditions.
• Quiescent Current: An extremely low quiescent current of 2 µA ensures minimal power consumption during operation, enhancing overall system efficiency.
• Power Supply Rejection Ratio (PSRR): A PSRR of 25dB at 1kHz helps in filtering out noise from the input power supply, ensuring a clean and stable output voltage.
• Control Features: The enable feature allows for precise control over the regulator's operation, enabling power-saving modes and dynamic power management.
• Protection Features: Overcurrent protection safeguards the device and connected circuits from potential damage due to excessive current.
• Moisture Sensitivity Level (MSL): Rated at MSL 1 (Unlimited), the NCP4681DMX33TCG is suitable for a variety of manufacturing environments without the need for special handling.
• Package: The Tape & Reel (TR) packaging format facilitates automated assembly processes, enhancing production efficiency.

NCP4681DMX33TCG Applications

The NCP4681DMX33TCG is ideal for a range of applications where a stable and efficient power supply is crucial. Its low dropout voltage and high PSRR make it particularly suitable for battery-powered devices and systems where input voltage levels can vary significantly. Some specific use cases include:

• Consumer Electronics: Ideal for portable devices such as smartphones, tablets, and digital cameras, where a stable power supply is essential for optimal performance.
• Industrial Equipment: Suitable for industrial control systems, sensors, and IoT devices that require reliable power management.
• Medical Devices: Applicable in medical equipment where low power consumption and high reliability are critical.
• Automotive Applications: Can be used in automotive electronic systems, such as infotainment units and onboard diagnostics, where a stable 3.3V supply is required.

Conclusion of NCP4681DMX33TCG

The NCP4681DMX33TCG, despite being marked as obsolete, remains a valuable component for power management applications. Its combination of a fixed 3.3V output, low dropout voltage, and low quiescent current ensures efficient and stable power delivery. The enable feature and overcurrent protection further enhance its versatility and reliability. While newer alternatives may offer additional features, the NCP4681DMX33TCG continues to provide a robust solution for applications requiring a stable and efficient power supply.