应用功能: 美国国家半导体公司(national)公司-3A电流输出降压开关型集成稳压电路 The LM2596 series of regulators are monolithic integratedcircuits that provide all the active functions for a step-down(buck) switching regulator, capable of driving a 3A load withexcellent line and load regulation. These devices are availablein fixed output voltages of 3.3V, 5V, 12V, and an adjustableoutput version.