TPS2501 Integrated USB Power Switch with Boost Converter |

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Integrated USB Power Switch with Boost Converter



The TPS2500 and TPS2501 provide an integrated solution to meet USB 5-V power requirements from a 1.8-V to 5.25-V input supply. The features include a Hi-Speed USB compliant power output, output switch enable, current limit, and overcurrent fault reporting.

The 1.8-V to 5.25-V input can be supplied by sources including dc/dc regulated supplies (e.g., 3.3 V), or batteries such as single-cell Li+ or three-cell NiCd, NiMH, or alkaline.

The USB power-switch current limit is programmable via an external resistor from as low as 130 mA to as high as 1400 mA (typical). Two standard USB ports can be supported from a single TPS2500 or TPS2501 at the 1400-mA setting.

Additionally, the boost converter output is available as an auxiliary 5.1-V output to power additional loads. The total current supplied by the USB output and the auxiliary cannot exceed 1148  mA at VIN = 3 V.


  • Integrated Synchronous Boost Converter and USB Current-Limit Power Switch
  • Light-Load, High-Efficiency Eco-mode™ Control Scheme (TPS2500)
    or Constant Frequency (TPS2501)
  • 1.8-V to 5.25-V Input Voltage (2.2-V Minimum Start-Up Voltage)
  • Adjustable USB Current Limit
    • 130 mA to 1400 mA (Typical)
  • Accurate 20% Current Limit at 1.4-A Setting
  • Powers up to Two Standard USB Ports
  • Auxiliary 5.1-V Output
  • Fast Overcurrent-Response Time – 5 µs Typical
  • Small 3-mm × 3-mm × 0.9-mm SON-10 Package
  • 15-kV / 8-kV System-Level ESD Capable
  • UL Listed - File No. E169910
    • Portable Applications Using Single Li+ Cell
    • USB Hosts Without Native 5-V Supplies

Eco-mode, PowerPAD are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.


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Part number Order Vin (Min) (V) Vin (Max) (V) Continuous current (Max) (A) Current limit (A) Enable Number of switches Rating
TPS2501 Order now 1.8     5.25     1.4     0.13 to 1.4     Active High     1     Catalog    
TPS2500 Order now 1.8     5.25     1.4     0.13 to 1.4     Active High     1     Catalog