onsemi

LM2576T-3.3

LM2576T-3.3 Description

The LM2576T-3.3 is a fixed-output voltage regulator designed by onsemi, a leading manufacturer in the power management sector. This IC regulator is engineered to provide a stable 3.3V output at a maximum current of 3A, making it suitable for a variety of applications requiring efficient power conversion. The LM2576T-3.3 operates within an input voltage range of 7V to 40V, ensuring compatibility with a wide range of power sources. It employs a buck topology, which is known for its high efficiency and compact design, making it ideal for space-constrained applications.

LM2576T-3.3 Features

• Fixed Output Voltage: The LM2576T-3.3 offers a fixed output voltage of 3.3V, eliminating the need for external resistors to set the output voltage. This simplifies the design process and reduces component count.
• High Input Voltage Range: With an input voltage range of 7V to 40V, the regulator can accommodate a variety of power sources, enhancing its versatility.
• High Current Capability: The regulator is capable of delivering up to 3A of output current, making it suitable for applications with high power requirements.
• Buck Topology: Utilizing a buck topology, the LM2576T-3.3 achieves high efficiency and compact size, which is crucial for modern electronic designs.
• Switching Frequency: The regulator operates at a switching frequency of 52kHz, which balances efficiency and component size.
• Through Hole Mounting: The through-hole mounting type ensures robust mechanical stability and ease of installation on printed circuit boards.
• Output Configuration: The LM2576T-3.3 supports both positive and negative output configurations, providing flexibility in circuit design.
• Moisture Sensitivity Level: With an MSL rating of 1 (unlimited), the regulator is suitable for use in environments with varying humidity levels.
• Package Type: The regulator is available in a tube package, which is convenient for bulk handling and storage.

LM2576T-3.3 Applications

The LM2576T-3.3 is well-suited for a range of applications due to its robust design and high efficiency. Some specific use cases include:

• Consumer Electronics: Ideal for powering devices such as smartphones, tablets, and other portable electronics that require a stable 3.3V supply.
• Industrial Equipment: Suitable for industrial control systems, sensors, and actuators that need a reliable power source.
• Telecommunications: Can be used in communication infrastructure equipment, such as base stations and routers, where efficient power management is critical.
• Automotive Electronics: Applicable in automotive systems, such as infotainment systems and electronic control units, where space and efficiency are key considerations.

Conclusion of LM2576T-3.3

The LM2576T-3.3 is a versatile and efficient voltage regulator that offers a fixed 3.3V output with a maximum current of 3A. Its wide input voltage range, high efficiency, and compact size make it an excellent choice for a variety of applications. Despite being marked as obsolete, the LM2576T-3.3 remains a reliable option for designers who require a straightforward and effective power management solution. Its through-hole mounting and tube packaging ensure ease of integration into existing designs, while its robust specifications guarantee reliable performance in diverse environments.