Keywords: LM2596 DC-DC Buck Converter Step Down Module, DC-DC Buck converter Part No.: PMS034 Specification Input voltage: 4V-35V Input Current: 3A (max.) Output voltage: 1.23V to 30V Switching frequency: 150kHz Load regulation: +- 5% Working temperature: -40C to +85C Rectification mode: non-synchronous rectification Conversion efficiency: 92% Output ripple: 30mV(max.) Voltage regulation: +- 2.5% Overall dimensions: 48mm x 23 mm x 14 mm