Features: _x000D_100% brand new and high quality. _x000D_This is a DC-DC boost converter module with working frequency of 1 MHz._x000D__x000D_The module has high efficiency up to 94%, usually can be 84%~91%. _x000D_Ultra small size and light weight, it is convenient to use. _x000D__x000D_Widely used for battery-powered devices, multimeter, small power motors, cameras, electric toys, model aircraft, LED lighting, electronic DIY kits, etc. _x000D__x000D__x000D_Specification:_x000D__x000D_Output voltage: 3.7V, 5V, 12V (Optional) _x000D_Efficiency: 94% (usually is 84%-91%)_x000D_Quiescent current: 0.19mA_x000D_Operating temperature range : -40~+85 Degrees Celsius_x000D_Storage temperature range : -65~+150 Degrees Celsius _x000D_Size: 13*11*5.2mm / 0.5*0.4*0.2in _x000D_Weight: 2g / 0.1oz (approx.) _x000D__x000D_Protection : _x000D_Over current protection(OCP)_x000D_Over voltage protection(OVP)_x000D_Short circuit protection(SCP)_x000D_Over temperature protection(OTP) _x000D__x000D_Pin description:_x000D_Vi : Input positive(+)_x000D_GND : Input and Output negative(GND/-)_x000D_Vo : Output positive(+)_x000D_ _x000D_Output 3.7V :_x000D_Input voltage: DC 2.6 - 3.6V_x000D_output voltage: DC 3.7V3%_x000D_Maximum output : 3.7V/1200MA(See the table below for details)_x000D_ _x000D_Output 5V :_x000D_Input voltage: DC 2.6 ~ 4.5V _x000D_Output voltage: DC 5V3%_x000D_Maximum output : 5V/1200MA _x000D_ _x000D_Output 12V :_x000D_Input voltage: DC 2.6 ~ 6V _x000D_Output voltage: DC 12V3%_x000D_Maximum output : 12V/500MA _x000D__x000D__x000D__x000D_Package list:_x000D_1 * Module _x000D__x000D__x000D_Note:_x000D_This is a DC - DC voltage converter module, please pay attention when using:_x000D_1, The input voltage should not be higher than maximum input range._x000D_2, The output power cannot be higher than the maximum load for a long time._x000D_3, The input power must be higher than output power, because of the power consumption of the module itself._x000D_FAQ:_x000D_Q: Why the output voltage is lower than the nominal voltage?_x000D_A :Because the input power is too low.Use a multimeter to test the input voltage, the input voltage is very low at this time. 1100% brand new and high quality. 2This is a DC-DC boost converter module with working frequency of 1 MHz. 3The module has high efficiency up to 95%, usually can be 76%~93%. 4Ultra small size and light weight, it is convenient to use. 5Widely used for battery-powered devices, multimeter, small power motors, cameras, electric toys, model aircraft, LED lighting, electronic DIY kits, etc.