Reverse Current Blocking when VOUT > VINx
The 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.
Due to its low quiescent of 1.32 uA (typical) and low standby current of 50 nA (typical), the TPS2116 is 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 signal to switch between channels.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS2116 | SOT (8) | 2.1 mm x 1.6 mm |
Changes from Revision * (January 2021) to Revision A (May 2021)
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
GND | 1 | - | Device ground. |
VOUT | 2, 7 | O | Output power. |
VIN1 | 3 | I | Channel 1 input power. |
PR1 | 4 | I | Selects between VIN1 and VIN2. When PR1 is high VIN1 is selected, and when PR1 is low VIN2 is selected. |
MODE | 5 | I | Device is put into Priority mode when MODE is tied to VIN1 and manual mode when MODE is pulled up to an external voltage. |
VIN2 | 6 | I | Channel 2 input power. |
ST | 8 | O | Open drain status pin. Pulled low when VIN1 is not being used. |