The LM2576SX-5.0/NOPB is a buck switching regulator IC from Texas Instruments built for positive fixed 5V 1 output, with 3A current limit. It comes in a TO-263-6, D²Pak (5 Leads + Tab), TO-263BA package and is designed to provide an efficient, low noise, small footprint solution for applications such as small DC/DC converters, charge pumps and post-regulators. The LM2576SX-5.0/NOPB is a highly efficient, step-down switching regulator which can deliver up to 3A of output current with an output voltage as low as 1.3V. It also has an adjustable output voltage and its output can be trimmed using an external resistor divider. A wide input voltage range of up to 40V gives the buck switching regulator a great deal of flexibility. Furthermore, the unique design of the chip allows it to operate at high frequency with low noise and low power dissipation, making it an ideal solution for applications demanding high efficiency and low power consumption.