Fangrui Product Details Fangrui Product Details Fangrui Product Details Output Frequency: Dc-dc Output Type: Dual Type: Dc or dc Converters Model Number: Dd39ajpa Size: 60 X 34 X 15mm Output Current: Less Than 3000ma Weight: 29g(no Terminal) Terminal:no Terminal Output Voltage: Dc and-3-30v Input Voltage: Dc 3.6-30v Color:green Material: Plastic Description: Maximum Output Power: 20w Conversion Efficiency :69- Quiescent Current: 3ma 20w Dc-dc Boost-buck Converter Working Frequency 180khz. Operating Ambient Temperature : -40-and85 Degrees Celsius High Efficiency Up To Built In Frequency Compensation Built In Soft-start Function Built In Thermal Shutdown Function Built In Current Limit Function Note: 1 In Order To Obtain A More Stable Voltage, It Is Recommended That The Output Is 15ma 2 V- Cannot Be Used Alone, Or No Voltage Output.but You Can Just Use Vand 3 The Startup Current Of The Module Is 2.5-3 Times The Operating Current. 4 Increasing The 1uf-10uf Mlcc Capacitor Reduces The Startup Current Package Contents: 1 Pcs X 20w Dc Dc Boost-buck Converter Positive And Negative Vo Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.