Output Frequency: DC-DC Output Type: DUAL Type: DC/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 +-3-30V Input Voltage: DC 3.6-30V color:green Material: plastic Maximum output power: 20W Conversion efficiency :69-88% Quiescent current: 3mA 20W DC-DC Boost-Buck Converter working frequency 180KHZ. Operating ambient temperature : -40~+85 Degrees Celsius High efficiency up to 88% 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 greater than 15MA 2 V- cannot be used alone, or no voltage output.But you can just use V+ 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 voltage Dual voltage Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.