The LM2576-5.0BU is a high-performance buck switching voltage regulator integrated circuit designed by Micrel/Microchip Technology, specifically engineered to provide efficient and reliable power management in electronic systems. This device is a robust solution for converting higher input voltages to a stable 5V output with remarkable current handling capabilities.
As a step-down (buck) switching regulator, the LM2576-5.0BU addresses critical design challenges in power conversion, offering a streamlined approach to voltage regulation with enhanced efficiency compared to traditional linear regulators. The IC can effectively manage input voltages ranging from 4V to 40V and deliver a consistent 5V output at up to 3A, making it suitable for a wide range of electronic applications.
Key specifications include a switching frequency of 52kHz, which enables compact design and reduces electromagnetic interference. The device is designed for robust performance across an extended temperature range of -40°C to 125°C, ensuring reliability in demanding environmental conditions. Its surface-mount TO-263-5 package facilitates easy integration into modern electronic designs.
Primary advantages of this voltage regulator include high efficiency, low component count, and minimal external component requirements. The IC's buck topology allows for significant power conversion efficiency, reducing energy waste and heat generation. Its fixed 5V output makes it particularly useful in applications requiring stable power supply, such as microcontroller systems, embedded electronics, and portable devices.
Typical application areas encompass telecommunications equipment, industrial control systems, automotive electronics, consumer electronics, and power management circuits that require precise, stable voltage regulation.
Equivalent or alternative models include:
1. LM2576HV-5.0 (similar specifications with high voltage input tolerance)
2. LM2576S-5.0 (similar performance with different package options)
3. MP2307DN (compatible alternative from another manufacturer)
4. RT8059GE (functionally similar switching regulator)
The device is surface-mountable and compatible with various electronic design environments, offering versatility in power management solutions. Its non-synchronous rectification and robust design make it a reliable choice for engineers seeking efficient voltage regulation.
LM2576-5.0BU (1)
LM2576-5.0BU Key Technical Attributes
Manufacturer Part Number LM2576-5.0BU
Manufacturer Micrel / Microchip Technology
Base Part Number LM2576
LM2576-5.0BU Packing Size
Package / Case TO-263-6, DPak (5 Leads + Tab), TO-263BA
Packaging Type Tube
Supplier Device Package TO-263-5
LM2576-5.0BU Application
Used in applications requiring a step-down (buck) switching regulator
Ideal for creating a fixed 5V output from input voltages up to 40V
LM2576-5.0BU Features
This switching regulator IC facilitates efficient voltage step-down, converting input voltages between 4V and 40V to a fixed 5V output
Capable of delivering 3A current output
Features a switching frequency of 52kHz
Simple external components required due to internal compensation
Includes thermal shutdown and current limit protection
LM2576-5.0BU Quality and Safety Features
Moisture Sensitivity Level (MSL) is rated at 3 (168 Hours), showcasing its stability under environmental conditions
Non-synchronous rectifier ensuring basic, efficient functionality
Compliant with RoHS lead requirements under exemptions, indicating regulated usage of hazardous substances
LM2576-5.0BU Compatibility
Designed to interface seamlessly with a range of external components in a surface mount setup
Compatible with various industrial and commercial applications due to its wide operating temperature range from -40°C to 125°C
LM2576-5.0BU Datasheet PDF
For detailed specifications and operational guidelines, refer to the datasheet of LM2576-5.0BU
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