The TPS2069D power-distribution switch family is intended for
applications such as USB where heavy capacitive loads and short
circuits are likely to be encountered. The device can continuously
deliver up to 1.5 A output current.
The TPS2069D limits the output current to a safe level by operating
in a constant-current mode when the output load exceeds the current
limit threshold. This provides a predictable fault current under
all conditions. The fast overload response time eases the burden on
the main 5-V supply to provide regulated power when the output is
shorted. The power-switch rise and fall times are controlled to
minimize current surges during turnon and turnoff.