ITEM NAME:1 Pcs LM2596 DC-DC step-down power supply module 4V-35V 3 SE Description: Module nature: non isolated Buck Rectification mode: asynchronous rectification Input voltage: 4v-35v Output voltage: 1.23v-30v Output current: 3A (maximum) Conversion efficiency: 92% (maximum) Switching frequency: 150kHz Output ripple: 30mV (maximum) Load adjustment rate: Â ± 0.5% Voltage regulation rate: Â ± 2.5% Operating temperature: - 40 ℃ to + 85 ℃ Peripheral dimension: 48 * 23 * 14 (L * w * h) (mm) Package includes: 1 pcs.Module nature: non isolated Buck. Output current: 3A (maximum). Output ripple: 30mV (maximum).