Microchip Technology, Inc. PMIC - PMIC - Voltage Regulators - DCDC Switching Regulators - LM2575-3.3BT LM2575-3.3BT

The LM2575-3.3BT is a monolithic integrated circuit designed for step-down (buck) switching regulation, providing a fixed output voltage of 3.3V with a maximum output current of 1A. It operates efficiently over a wide input voltage range of 4V to 40V and is capable of delivering excellent line and load regulation, with a guaranteed output voltage tolerance of ±3% under specified conditions. This regulator features a fixed-frequency internal oscillator operating at 52kHz, which simplifies design requirements by minimizing the number of external components needed. The device includes thermal shutdown and cycle-by-cycle current limiting for protection against fault conditions. Additionally, it has a low power standby mode with a typical quiescent current of less than 200µA, making it suitable for applications where power efficiency is critical. The LM2575-3.3BT is packaged in a 5-pin TO-220 configuration, making it easy to integrate into various designs. It is ideal for applications such as high-efficiency step-down regulation, pre-regulation for linear regulators, and on-card switching regulators.