1 Features
1• Single Power Switch Family
• Rated currents of 1 A
• ±20% Accurate, Fixed, Constant Current Limit
• Fast Overcurrent Response: 2 μs
• Deglitched Fault Reporting
• Output Discharge
• Reverse Current Blocking
• Built-in Soft Start
• Ambient Temperature Range: –40°C to 85°C
• UL Listed and CB-File No. E169910

2 Applications
• USB Ports/Hubs, Laptops, Desktops
• High-Definition Digital TVs
• Set Top Boxes
• Short Circuit Protection

3 Description
The TPS2065D 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 A output current.
The TPS2065D 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.