Texas Instruments LM2576 Step Down Regulator, 40V, 3A, TO-220

The LM2576 series from Texas Instruments are monolithic integrated circuits that deliver all the active functions for a step-down (buck) switching regulator. Capable of driving a 3A load with excellent line and load regulation, these regulators require a minimum number of external components, making them simple to use. They include built-in fault protection and a fixed-frequency oscillator, ensuring reliable operation in a variety of applications.

As a high-efficiency replacement for popular three-terminal linear regulators, the LM2576 series substantially reduces the size of the heat sink and, in some cases, eliminates the need for one entirely. This makes it an ideal choice for space-constrained designs where thermal management is critical.

Key Features

• Output Type: Fixed
• Number of Outputs: 1
• Topology: Buck (Step Down)
• Input Voltage Range: 4V to 40V
• Output Current: 3A (max)
• Package: TO-220
• Number of Pins: 5
• Mounting Type: Through Hole
• Nominal Output Voltage: 12V
• Switching Frequency: 52kHz
• Efficiency: 88%
• Operating Temperature Range: -40°C to 125°C

The device is supplied in a TO-220 package with 5 pins and is designed for through-hole mounting, offering ease of integration into your PCB layout. With a typical efficiency of 88%, this regulator minimises power loss and improves overall system performance. Whether you are designing power supplies for industrial controls, consumer electronics, or embedded systems, the LM2576 provides a robust and efficient solution.