Microchip Technology

LM2576-3.3BU  

DC Switching Voltage Regulators

LM2576-3.3BU Description

The LM2576-3.3BU is a fixed-output voltage regulator designed for high efficiency and performance in power management applications. Manufactured by Microchip Technology, this IC is part of the Power Management (PMIC) category and features a buck topology. It is designed to provide a stable 3.3V output voltage with a maximum output current of 3A. The regulator operates within an input voltage range of 4V to 40V, making it suitable for a wide variety of power supply applications. The LM2576-3.3BU is housed in a TO263-5 package and is intended for surface mount applications. Despite its obsolete product status, it remains a reliable choice for applications requiring a robust and efficient power solution.

LM2576-3.3BU Features

• Fixed Output Voltage: The LM2576-3.3BU offers a fixed output voltage of 3.3V, ensuring stable power delivery to sensitive electronic components.
• High Input Voltage Range: With an input voltage range of 4V to 40V, this regulator can accommodate a variety of input power sources, enhancing its versatility.
• High Output Current: Capable of delivering up to 3A of output current, the LM2576-3.3BU is suitable for applications requiring high power delivery.
• Buck Topology: The buck topology ensures high efficiency and minimal power loss, making it ideal for applications where energy efficiency is critical.
• Surface Mount Packaging: The TO263-5 package is designed for surface mount technology, facilitating easy integration into modern PCB designs.
• Switching Frequency: The regulator operates at a switching frequency of 52kHz, which balances efficiency and component size.
• Moisture Sensitivity Level: With an MSL rating of 3 (168 Hours), the LM2576-3.3BU is suitable for environments with moderate humidity levels.
• Compliance: The regulator is REACH unaffected and classified under ECCN EAR99, ensuring compliance with international regulations.

LM2576-3.3BU Applications

The LM2576-3.3BU is ideal for a range of applications where a stable and efficient power supply is required. Some specific use cases include:

• Consumer Electronics: Powering devices such as smartphones, tablets, and portable gaming consoles.
• Industrial Equipment: Providing stable power to control systems, sensors, and actuators.
• Telecommunications: Supplying power to base stations, routers, and other networking equipment.
• Automotive: Used in vehicle infotainment systems and electronic control units.
• Medical Devices: Ensuring reliable power for diagnostic equipment and portable medical devices.

Conclusion of LM2576-3.3BU

The LM2576-3.3BU from Microchip Technology is a robust and efficient fixed-output voltage regulator designed for high-performance power management applications. Its wide input voltage range, high output current capability, and buck topology make it an excellent choice for applications requiring stable and efficient power delivery. Despite its obsolete status, the LM2576-3.3BU remains a reliable option for engineers and designers seeking a proven power solution. Its surface mount packaging and compliance with international regulations further enhance its suitability for modern electronic designs.

LM2576-3.3BU Documents

Download datasheets and manufacturer documentation for LM2576-3.3BU

Datasheets :

LM2576      

PCN Packaging :

MBB/Label Chgs 16/Nov/2018      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH