LM2590HV SIMPLE SWITCHER®Power Converter 150 kHz 1AStep-Down Voltage Regulator, with FeaturesGeneral Des criptionThe LM2590HV series of regulators are monolithic integratedcircuits that provide all the active functions for astep-down (buck) switching regulator, capable of driving a1A load with excellent line and load regulation. These devicesare available in fixed output voltages of 3.3V, 5V, andan adjustable output version.This series of switching regulators is similar to theLM2591HV with additional supervisory and performance features.Requiring a minimum number of external components, theseregulators are simple to use and include internal frequencycompensation†, improved line and load specifications,fixed-frequency oscillator, Shutdown/Soft-start, output errorflag and flag delay.The LM2590HV operates at a switching frequency of 150kHz thus allowing smaller sized filter components than whatwould be needed with lower frequency switching regulators.Available in a standard 7-lead TO-220 package with severaldifferent lead bend options, and a 7-lead TO-263 Surfacemount package.