DC-DC Converter Step Up Boost Module 3V to 5V 1A USB Charger for MP3/MP4 Phone


Efficiency: Up to 92% (the higher the input voltage, the higher the efficiency)
Switching frequency: 1MHz.
Output ripple: 20mV (MAX)
Operating Temperature: Industrial (-40¡ãc to +85¡ãc).
Voltage regulation: ¡À2.5%.
Short circuit protection: None (Please use the lithium battery with protection.).
Input Reverse Polarity Protection: None.
Connection: Welding.
Input: IN + Positive, IN-Negative.
Output: USB Output.
DIY a mobile power supply, only need one battery, you can output 5V voltage for your phone, MP3, MP4, PSP charger, very easy.
In order to power your electronic devices when your device needs 5V power supply, when you only have lithium battery, this module can be directly step-up to 5V, solve your problems.