Texas Instruments LM2574
the LM2574 with the WEBENCH® Power Designer 2 Applications • Simple high-efficiency step-down (buck) regulator • Efficient preregulator for linear regulators • On-card switching regulators • Positive-to-negative converter (buck-boost) 3 Description The LM2574xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version. The LM2574xx series offers a high-efficiency replacement for popular three-terminal linear regulators.