The LM2596 DC-DC Buck Converter Power Supply module is most popular and still widely available is one with the LM2596S adjustable regulator, Here’re some quick pointers that will (hopefully) help you get it right! DC-DC Buck Converter Step Down Module LM2596 Power Supply is a step-down(buck) switching regulator, capable of driving a 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version. The LM2596 series operates at a switching frequency of 150kHz, thus allowing smaller sized filter components than what would be required with lower frequency switching regulators. LM2596 DC-DC Buck Converter Features: Compact size LM2596S converter IC Input voltage range 4.5 to 40V Output voltage range 1.25 to 35V Multi-turn trimpot for adjustment of the output voltage Conversion efficiency up to 92% Voltage regulation: ± 2.5% Load regulation: ± 0.5% Short circuit protection (current limiting) Output current up to 3A (additional heatsink is required) Package Includes: 1 x LM2596 DC-DC Buck Converter Power Supply
