The device is designed to operate with a VIN
range of 1.8 V to 5.5 V. The VIN power supply must be well regulated and placed as close
to the device terminal as possible. The power supply must be able to withstand all
transient load current steps. In most situations, using an input capacitance (CIN) of 1
μF is sufficient to prevent the supply voltage from dipping when the switch is turned
on. In cases where the power supply is slow to respond to a large transient current or
large load current step, additional bulk capacitance can be required on the
input.