XL4015 CC/CV 5 Amp DC to DC Adjustable Step Down Buck Converter Module Use Lithium Battery Charging (532V To 0.830V)Size: 51 * 26.3 * 14 (L * W * H) (mm)Operating Temperature: 40 ° to +85 °Voltage Regulation: ± 2.5%Load Regulation: ± 0.5%Output ripple: 50mV (max) 20M bandwidthSwitching frequency: 300KHzConversion efficiency: 95% (the highest)Input voltage: 5V32VOutput voltage: 0.8V30VOutput current: adjustable maximum 5ARectification: nonsynchronous rectificationModule Properties: nonisolated constant current and voltage module.