1 Features

• 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.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Spacer

Spacer

Spacer

Typical Application Diagram