onsemi

LM2576D2T-012G

LM2576D2T-012G Description

The LM2576D2T-012G from onsemi is a fixed 12V, 3A step-down (buck) switching voltage regulator in a D2PAK-5 surface-mount package. Designed for high-efficiency power conversion, it operates over a 7V to 40V input range, making it suitable for a wide variety of industrial, automotive, and consumer applications. With a 52kHz switching frequency, it balances efficiency and component size, reducing the need for large external filters. The device supports positive or negative output configurations, offering flexibility in circuit design. Although marked as obsolete, it remains a reliable choice for legacy systems due to its robust performance and REACH compliance.

LM2576D2T-012G Features

• Fixed 12V output with ±4% tolerance for stable voltage regulation.
• High 3A output current capability, ideal for powering medium-load applications.
• Wide input range (7V–40V), accommodating unregulated or fluctuating power sources.
• 52kHz switching frequency minimizes external inductor and capacitor sizes.
• Non-synchronous rectification simplifies design while maintaining efficiency.
• Thermal shutdown and current limiting for robust protection against faults.
• MSL 1 (Unlimited) moisture sensitivity, ensuring ease of handling and storage.
• D2PAK-5 package provides efficient thermal dissipation for high-power applications.

LM2576D2T-012G Applications

This regulator excels in scenarios requiring high-current, step-down conversion with minimal external components:

• Industrial power supplies: For PLCs, motor controllers, and automation systems.
• Automotive electronics: Auxiliary power for infotainment, lighting, or sensors.
• Consumer devices: Set-top boxes, routers, and audio amplifiers.
• Battery-powered systems: Efficiently steps down higher battery voltages (e.g., 24V to 12V).
• Negative voltage generation: When configured as an inverting buck-boost converter.

Conclusion of LM2576D2T-012G

The LM2576D2T-012G is a versatile, high-performance buck regulator offering simplicity, reliability, and efficiency in a compact package. While obsolete, its wide input range, 3A output, and flexible configuration make it a pragmatic choice for legacy designs or applications requiring proven performance. Engineers value its robust protection features and ease of integration, particularly in industrial and automotive systems where stability under varying conditions is critical.