Texas Instruments TPS20xxE Power-Distribution Switches

Texas Instruments TPS20xxE Power-Distribution Switches are intended for applications such as USB, where heavy capacitive loads and short circuits are likely to be encountered. These devices offer fixed current-limit thresholds for applications requiring 1.5A or 2A loading, with options between high or low enable polarization in different packages.

The Texas Instruments TPS20xxE 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 feature provides a predictable fault current under all conditions. The fast overload response time eases the burden on the 2.7V to 5.5V 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-to-pin with existing TI switch portfolio
  • Rated currents of 1.5A and 2A
  • Supports 3.3V and 5V power rail
  • ±20% accurate, fixed, constant current limit
  • 2µs fast overcurrent response
  • Deglitched fault reporting
  • Output discharge
  • Reverse current blocking
  • Built-in soft start
  • –40°C to 85°C ambient temperature range


  • PC and notebooks
  • Gaming
  • TV
  • Connected peripherals and printers
  • Data center and enterprise computing
  • Short-circuit protection

Functional Block Diagram

Block Diagram - Texas Instruments TPS20xxE Power-Distribution Switches
Published: 2023-09-12 | Updated: 2023-09-19