ITEM NAME:DC-DC CC CV Lithium Converter Step-down Power Supply Module 5-32V to 0.8-30 Product Description Description: Features: This linear module has constant voltage and constant current function (CC CV), and it has a good performance. When you use it as a charger, this module use good chip as core and it is stable, also its ripple is low to 50mV. Specifications: Size: approx. 50 X 26 X 11 mm/1.97 X 1.02 X 0.43" Operating Temperature: -40 - 85Â °C Voltage Regulation: 2.5% Load Regulation: 0.5% Output ripple: 50mV (max) 20M Bandwidth Switch frequency: 300KHz Conversion efficiency: 95% (the highest) Output current: adjustable maximum 5A Output voltage: 0.8V-30V Input voltage: 5V-32V Rectification: non-synchronous rectification Module Properties: non-isolated constant current and voltage module. Advantage: CC CV Low ripple when the module charges a battery, it first use constant current to protect the battery. Check the curse above. Included: 1 x Lithium Charger Step Down Module.Check the curse above. Load Regulation: 0.5%. Output ripple: 50mV (max) 20M. Output current: adjustable maximum 5A. Size: approx. 50 X 26 X 11 mm/1.97 X 1.02 X 0.43". If item is defective after 3 months, you can still send it back to us.