3.3V/5V DC/DC Converter by Tek Gear

Get more out of your batteries

PRT-00114: Here is a very simple breadboard power supply kit that takes power from a DC wall wart and outputs a selectable 5V or 3.3V regulated voltage. The .1 headers are mounted on the bottom of the PCB for simple insertion into a breadboard. Pins labeled VCC and GND plug directly into the power lines. The lone pair of pins have no electrical connection but help support the PCB. There are two pins available within the barrel jack footprint.

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USB INTERFACE: Multi-function DC / DC 5V to 3.3V step-down module with USB interface. 3 FUNCTIONS: USB to 3.3V; USB to 5V(5V to 5V); T5V to 3.3V. PCB

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上海英联电子系统有限公司

USB INTERFACE: Multi-function DC / DC 5V to 3.3V step-down module with USB interface. 3 FUNCTIONS: USB to 3.3V; USB to 5V(5V to 5V); T5V to 3.3V. PCB

Step-Down Module, CE009 5V to 3.3V DC-DC USB Power Supply Module Step-Down Buck Converter Module