In figure 1 we have an application for NLAS5113, a new device from On Semiconductor (www.onsemi.com) that consists of an analog switch that has a resistance of only 1.3 ohms when connected with a 4.2 Vdc. operating in the range of 1.65 to 4.5 V is indicated for mobile applications.

In figure 2 we have the cases in which this component is available.
