onsemi

LM2575T-12G

LM2575T-12G Description

The LM2575T-12G from onsemi is a fixed-output 12V, 1A buck (step-down) switching voltage regulator designed for efficient power conversion in a wide range of applications. This obsolete but still widely used IC operates with an input voltage range of 4.75V to 40V, making it suitable for both low and high-voltage power supplies. Its 52kHz switching frequency ensures compact external component sizing while maintaining stable performance. Packaged in a TO-220-5 through-hole format, it is robust and easy to integrate into designs requiring moderate power handling.

LM2575T-12G Features

• Fixed 12V Output: Eliminates the need for external feedback resistors, simplifying design.
• Wide Input Range (4.75V–40V): Supports diverse power sources, including automotive and industrial supplies.
• High Efficiency (Up to 80%): Minimizes heat dissipation compared to linear regulators.
• Built-in Protection: Features thermal shutdown and current limiting for enhanced reliability.
• Non-Synchronous Rectification: Reduces cost while maintaining performance for moderate current applications.
• RoHS3 & REACH Compliant: Meets environmental and safety standards.

LM2575T-12G Applications

• Automotive Systems: Powering infotainment, sensors, and lighting from 12V/24V batteries.
• Industrial Controls: Step-down conversion for PLCs, motor drivers, and instrumentation.
• Consumer Electronics: Efficient voltage regulation in set-top boxes, routers, and peripherals.
• Embedded Systems: Reliable power management for microcontrollers and IoT devices.
• Retrofit Designs: Ideal for legacy systems requiring a proven, cost-effective regulator.

Conclusion of LM2575T-12G

The LM2575T-12G remains a dependable choice for 12V, 1A step-down conversion, offering a balance of efficiency, simplicity, and durability. While marked obsolete, its widespread adoption and proven performance make it a viable option for designs prioritizing stability over cutting-edge features. Engineers value its minimal external component count, robust protection mechanisms, and versatility across automotive, industrial, and consumer applications. For projects requiring a no-frills, high-performance buck regulator, the LM2575T-12G delivers consistent results.