Microchip Technology, Inc. PMIC - PMIC - Voltage Regulators - DCDC Switching Regulators - LM2576-12BT LM2576-12BT

The LM2576-12BT is a monolithic integrated circuit designed for step-down (buck) switching regulation, providing a fixed output voltage of 12V and capable of delivering up to 3A of load current. It operates efficiently with a wide input voltage range of 7V to 40V and features a guaranteed output voltage tolerance of ±3% under specified conditions. The device includes internal frequency compensation and a fixed-frequency oscillator operating at 52kHz, which simplifies the design process by requiring only four external components. This regulator is particularly advantageous for applications where heat dissipation is a concern, as it can significantly reduce the need for heat sinks compared to traditional linear regulators. The LM2576-12BT also incorporates essential protection features such as thermal shutdown and cycle-by-cycle current limiting, ensuring reliable operation under fault conditions. Its low power standby mode draws less than 200µA, making it suitable for battery-powered applications. The device is available in a TO-220 package, facilitating easy integration into various electronic designs.