Features: _x000D_ 1. This buck converter is designed to convert input voltage into lower output voltage, and its input voltage range is 4.75-40V. _x000D_ 2. Multiple protection functions including over-temperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection. _x000D_ 3. Made with high quality electronic components, stable performance. _x000D_ 4. Reasonable component layout, easy to wire and use. _x000D_ 5. 2.54mm pin pitch, for MCU Development Board Breadboard friendly. _x000D_ _x000D_ Specification: _x000D_ Output voltage: 3V 3.3V 3.7V 5V 6V 7.5V 9V 12V (Optional) _x000D_ Working frequency 550kHz _x000D_ Conversion efficiency: 75-90% _x000D_ Pin pitch: 2.54mm _x000D_ Size: 18.3*10.2*6.7mm / 0.72*0.4*0.26in _x000D_ Weight: 5g (approx.) _x000D_ _x000D_ 3V : _x000D_ Input voltage: 4.75~40V _x000D_ Output voltage: 3V _x000D_ Maximum output current: 1A _x000D_ Quiescent current: about 1.5mA _x000D_ _x000D_ 3.3V : _x000D_ Input voltage: 4.75~40V _x000D_ Output voltage: 3.3V _x000D_ Maximum output current: 1A _x000D_ Quiescent current: about 1.5mA _x000D_ _x000D_ 3.7V : _x000D_ Input voltage: 5~40V _x000D_ Output voltage: 3.7V _x000D_ Maximum output current: 1A _x000D_ Quiescent current: about 1.5mA _x000D_ _x000D_ 5V : _x000D_ Input voltage: 6.6~40V _x000D_ Output voltage: 5V _x000D_ Maximum output current: 1A _x000D_ Quiescent current: about 1.5mA _x000D_ _x000D_ 6V : _x000D_ Input voltage: 7.5~40V _x000D_ Output voltage: 6V _x000D_ Maximum output current: 1A _x000D_ Quiescent current: about 1.5mA _x000D_ _x000D_ 7.5V : _x000D_ Input voltage: 9~40V _x000D_ Output voltage: 7.5V _x000D_ Maximum output current: 1A _x000D_ Quiescent current: about 1.5mA _x000D_ _x000D_ 9V : _x000D_ Input voltage: 11~40V _x000D_ Output voltage: 9V _x000D_ Maximum output current: 0.9A _x000D_ Quiescent current: about 1.5mA _x000D_ _x000D_ 12V : _x000D_ Input voltage: 14~40V _x000D_ Output voltage: 12V _x000D_ Maximum output current: 0.8A _x000D_ Quiescent current: about 1.5mA _x000D_ _x000D_ Package List: _x000D_ 1 * Voltage Converter _x000D_ _x000D_ Note: _x000D_ This is a DC-DC voltage converter module, Must be noted when using: _x000D_ 1. Input voltage can not be greater than the maximum input range _x000D_ 2. Output power can not be greater than the maximum load for a long time _x000D_ 3. Input power must be greater than the output power, because the power consumption of the module itself