TPS2001DDBVR

1 Features

• Single Power Switch Family

• Rated Current of 2 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 and Hubs, Laptops, and Desktops

• High-Definition Digital TVs

• Set-Top Boxes

• Short-Circuit Protection

3 Description

The TPS2001D power-distribution switch is intended for applications where heavy capacitive loads and short circuits are likely to be encountered, such as USB.

The TPS2001D 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.

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