TPS2051C USB Power Distribution Switch

By Texas Instruments 89

TPS2051C USB Power Distribution Switch

Texas Instruments' TPS2051C 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 between 0.5 A and 2 A. The TPS2051C 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 turn-on and turn-off.

  • 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 over-current response - 2 µs
  • USB ports/hubs, laptops, desktops
  • High-definition digital TVs
  • Set top boxes
  • Short-circuit protection