Texas Instruments LM2574HV SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator LM2574HVM-12

The LM2574HV SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator is a monolithic integrated circuit designed for efficient voltage regulation in various applications. It supports fixed output voltages of 3.3V, 5V, 12V, and 15V, as well as an adjustable version with an output voltage range from 1.23V to 37V, and up to 57V for the high-voltage variant. This regulator can deliver a maximum output current of 0.5A and operates over a wide input voltage range of 40V, extending to 60V for the high-voltage version. The device features a fixed-frequency internal oscillator operating at 52 kHz, thermal shutdown, and current-limit protection, ensuring reliable operation under various conditions. It requires only four external components for implementation, simplifying the design process. The LM2574HV is suitable for applications such as step-down (buck) converters, pre-regulators for linear regulators, and on-card switching regulators. Its high efficiency minimizes the need for additional heat sinking, making it a practical choice for compact designs. The product is available in a 14-pin SOIC package and is rated for operation in temperatures ranging from -40¬8C to 125¬8C.