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Power Switch/Driver 1:1 N-Channel 2A SOT-23-5
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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