As indicated in Table 1, the main output is pin-selectable via VS1 and VS2 for one of four fixed output voltages (2.35V, 3.3V, 4.1V, or 5V) to power a wireless transmitter or sensors, thereby eliminating the need for multi MΩ external resistors. As a result, the LTC3108 does not require special board coatings to minimize leakage, such as discrete designs where very large value resistors are required. A second switched output can be enabled by the host to power devices that do not have a micropower shutdown capability.