The high conversion efficiency of this device encourages the use of a wide range of battery types. Photovoltaic cells and large capacitors ('supercapacitors') may also serve as power sources within the limits specified in Recommended Operating Conditions.
The TPS6122x devices have a wide input-voltage range, and deliver enough current to be applicable to many portable applications. However, at lower extremes of input voltage, less output current is available, and efficiency is somewhat less. Figure 1 - Figure 11 show the tradeoffs between input voltage, output current capacity and conversion efficiency, and allow the designer to plan how far to discharge a battery array before system shutdown occurs.
When the device is disabled, the output voltage follows the power-source voltage as shown in Figure 12.
See the description of the Startupsequence for more information.