TPS2116 1.6 V to 5.5 V, 40 mΩ, 2.5 A, Low-IQ Priority Power Multiplexer

TPS2116 1.6 V to 5.5 V, 40 mΩ, 2.5 A, Low-IQ Priority Power Multiplexer

Texas Instruments’ power mux features manual and priority switchover

Texas Instruments TPS2116 is a power mux device with a voltage rating of 1.6 V to 5.5 V and a maximum current rating of 2.5 A. The device uses N-channel MOSFETs to switch between supplies while providing a controlled slew rate when voltage is first applied.

The low quiescent of 1.32 µA (typical) and a low standby current of 50 nA (typical) make the TPS2116 ideal for systems where a battery is connected to one of the inputs. These low currents extend the life and operation of the battery when in use. The TPS2116 can be configured for two different switchover behaviors depending on the application. Automatic priority mode prioritizes the supply connected to VIN1 and switches over to the secondary supply (VIN2) when VIN1 drops. Manual mode allows the user to toggle a GPIO or enable a signal to switch between the channels.


  • Input voltage range: 1.6 V to 5.5 V
  • Continuous current: 2.5 A (max.)
  • On resistance: 40 mΩ (typ.)
  • VIN2 standby current: 50 nA (typ.)
  • Quiescent current: 1.32 µA (typ.)
  • Thermal shutdown
  • Switchover modes: priority mode and manual mode
  • Controlled output slew rate: 1.3 ms (typ.) at 3.3 V
  • Reverse current blocking when VOUT > VINx

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Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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