1 Features
1• Single Power Switch Family
• Pin-for-Pin With Existing TI Switch Portfolio
• Rated Currents of 0.5 A, 1 A, 1.5 A, 2 A
• ±20% Accurate, Fixed, Constant Current Limit
• Fast Overcurrent Response: 2 μs
• Deglitched Fault Reporting
• Selected Parts With (TPS20xxC) and Without
(TPS20xxC-2) 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 TPS20xxC and TPS20xxC-2 power-distribution
switch family is intended for applications, such as
USB, where heavy capacitive loads and short circuits
are likely to be encountered. This family offers
multiple devices with fixed current-limit thresholds for
applications from 0.5 A to 2 A.
The TPS20xxC and TPS20xxC-2 family 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.