Torex Semiconductor XCL303/XCL304 DC-DC Converter ICs are small coil-integrated, inductor built-in, negative output voltage, micro DC/DC converter ICs. The oscillating frequency is a fast 2.5MHz in a small 2.5mm x 2.0mm x 1.0mm package that contributes significantly to space-saving in the PCB area. Integrating the coil together with the DC/DC simplifies the circuit board layout and minimizes potential noise interference. The switching method of the XCL303/XCL304 maintains a stable output voltage even when the input voltage fluctuates. In addition, the micro DC/DC ICs can support a larger output current than a charge pump solution.