Model Specification: Automatic Buck module Module Properties: Non- isolated boost (BOOST) Rectification: Non- Synchronous Rectification Output Range:1.25V-35V Input Range:3.8V- 32V Input Current:3A ( max ),no-load 18mA (5V input , 8V output, no-load is less than 18mA. Higher the voltage , the greater the load current . ) Conversion efficiency:<94% ( greater the pressure, the lower the efficiency) Switching frequency:400KHz Output Ripple:50mV ( the higher the voltage , the greater the current , the greater the ripple ) Voltage Regulation:± 0.5% Load Regulation:± 0.5% Operating Temperature:-40 - 85 Dimensions:48mm * 25mm * 14mm ( L * W * H )