The XL6009 regulator is a wide input range,current mode, DC/DC converter which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. The XL6009 built in N-channel power MOSFET and fixed frequency oscillator, current-mode architecture results in stable operation over a wide range of supply and output voltages.The XL6009 regulator is special design for portable electronic equipment applications.
Need a boost? Using the XL6009 switching boost regulator IC this module can take an input voltage of between 5 and 32V DC and convert it to between 4 and 38V DC.
When using these modules remember that the output current will be a lot less than the input current, (remember - W = VA). For example, if you have a 10V output at 1A from a 5V input, the input current will be around 3.6A. The real-life maximum amount of power you can get out of these things is around 10W. .
To be honest these modules should be used when you don't have any other option, or if you only need a higher voltage at a low current. Otherwise it would be prudent to re-consider the power needs of your project.