The device is designed to operate with a VIN
range of 1.6 V to 5.5 V. The VIN power supplies must be well regulated and placed as
close to the device terminals as possible. The power supplies 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.