The TPS61098x features two operation modes controlled by MODE pin: the Active mode and Low Power mode. It can provide quick transient response in Active mode and ultra-low quiescent current in Low Power mode. So a low power system can easily use the TPS61098x to get high performance in its active mode and meantime minimize its power consumption to extend the battery run time in its sleep mode.

The MODE pin is usually controlled by an I/O pin of a controller, and should not be left floating.