Users may experience heat management problems when the LDO linear voltage regulator is used in a small board-space layout. When using an LDO, power loss increases with a corresponding increase in the difference between input and output voltages. Consider again the example of an output of 1.8V and 300mA. If the input voltage is 3.6V, the input power is 1.08W.  The output voltage is half of the input voltage so that 50% of the input power will be lost as it is converted to heat energy. The LDO case temperature will rise to 85ºC. By using the DC/DC converter under the same conditions, the Torex XCL206 case temperature will rise to 36ºC. The required DC/DC input power is much lower due to higher efficiency. The low temperature rise makes the XCL206 board design easier for the engineer.