Microchip (LM2576-5.0WT) Buck (Step Down) Switching Regulator

Buck (Step Down) Switching Regulator, Fixed, 4 V to 40 V in, 5 V/3 A out, 52kHz, TO-220-5Product OverviewThe LM2576-5.0WT is a Monolithic Integrated Circuit provide all the activefunctions for a step-down (buck) switching regulator. Fixed versions areavailable with a 3.3, 5 or 12V fixed output. Adjustable versions have an outputvoltage range from 1.23 to 37V. Both versions are capable of driving a 3A loadwith excellent line and load regulation. These regulators are simple to usebecause they require a minimum number of external components and includeinternal frequency compensation and a fixed-frequency oscillator. This seriesoffers a high efficiency replacement for popular three-terminal adjustablelinear regulators. It substantially reduces the size of the heat sink and inmany cases no heat sink is required. A standard series of inductors availablefrom several different manufacturers are ideal for use with this series. Thisfeature greatly simplifies the design of switch-mode power supplies.Voltage over specified line and load conditions±3% Maximum output voltage fixed version1.23V to 37V Wide output voltage rangeRequires only 4 external components52kHz Fixed frequency internal oscillator 80%)Uses readily available standard inductorsThermal shutdown and current limit protection100% Electrical thermal limit burn-inApplicationsSignal ProcessingProduct InformationTopology: Buck (Step Down)Input Voltage Min: 4VInput Voltage Max: 40VDC / DC Converter IC Case: TO-220No. of Pins: 5PinsOutput Current: 3AOutput Voltage Nom: 5VSwitching Frequency: 52kHzOperating Temperature Max: 85°C