Analog Devices Inc.

LT3050IDDB-3.3

LT3050IDDB-3.3 Description

The LT3050IDDB-3.3 is a high-performance linear voltage regulator designed by Analog Devices Inc., offering a fixed output voltage of 3.3V with a maximum output current of 100mA. This regulator is optimized for low dropout voltage operation, ensuring efficient power delivery even at high input voltages up to 45V. The LT3050IDDB-3.3 features a low quiescent current of 90 µA and a maximum supply current of 5.2 mA, making it suitable for applications where power efficiency is critical. The regulator is housed in a surface-mount package, specifically a tube, which facilitates easy integration into compact designs. Despite its status as an obsolete product, the LT3050IDDB-3.3 remains a robust solution for various electronic systems.

LT3050IDDB-3.3 Features

• Fixed Output Voltage: The LT3050IDDB-3.3 provides a stable 3.3V output, ideal for powering microcontrollers, sensors, and other low-voltage devices.
• Low Dropout Voltage: With a maximum dropout voltage of 0.55V at 100mA, this regulator ensures high efficiency even at low input-to-output voltage differentials.
• High Input Voltage Range: Capable of handling input voltages up to 45V, the LT3050IDDB-3.3 is suitable for a wide range of applications, including automotive and industrial systems.
• Low Quiescent Current: The regulator's low quiescent current of 90 µA minimizes power consumption, making it ideal for battery-powered and energy-sensitive applications.
• Control and Protection Features: The LT3050IDDB-3.3 includes current limit, enable, and soft-start features, along with over-current, over-temperature, and reverse polarity protection, ensuring reliable operation under various conditions.
• High PSRR: With a power supply rejection ratio (PSRR) of 70dB at 120Hz, the regulator effectively filters out noise from the input supply, resulting in cleaner output voltage.
• Moisture Sensitivity Level: The MSL level of 1 (unlimited) indicates that the device is not moisture-sensitive, facilitating easier handling and assembly processes.

LT3050IDDB-3.3 Applications

The LT3050IDDB-3.3 is well-suited for a variety of applications where a stable and efficient power supply is required. Key use cases include:

• Microcontroller Power Supplies: Providing a stable 3.3V supply for microcontrollers and other low-voltage digital circuits.
• Sensor Applications: Ideal for powering sensors in industrial and automotive environments, where high input voltage ranges and low dropout voltage are critical.
• Battery-Powered Devices: The low quiescent current and high efficiency make this regulator suitable for battery-operated systems, extending operational time.
• Industrial Control Systems: The robust protection features and high input voltage range ensure reliable operation in demanding industrial environments.

Conclusion of LT3050IDDB-3.3

The LT3050IDDB-3.3 from Analog Devices Inc. is a versatile linear voltage regulator that offers a combination of high performance and reliability. Its low dropout voltage, high input voltage range, and low quiescent current make it an excellent choice for a wide range of applications, from microcontroller power supplies to industrial control systems. Despite being marked as obsolete, the LT3050IDDB-3.3 remains a valuable component for engineers and designers seeking a dependable and efficient power solution.