TPS2121RUXT Description

The TPS2121 devices are Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) that are well suited for a variety of systems having multiple power sources. The devices will Automatically Detect, Select, and Seamlessly Transition between available inputs.
An Ideal Diode operation is used to seamlessly transition between input sources. During switchover, the voltage drop is controlled to block reverse current before it happens and provide uninterrupted power to the load with minimal hold-up capacitance.
Current limiting is used during startup and switchover to protect against overcurrent events, and also protects the device during normal operation. The output current limit can be adjusted with a single external resistor. The TPS2121 devices are available in WCSP and small VQFN-HR package options characterized for operation for a temperature range of –40°C to 125°C.
TPS2121RUXT Features

● Channel status indication (ST)
● Adjustable input settling time (SS)
● Adjustable output soft start time (SS)
● TPS2121 Fast output switchover (tSW): 5 μs (typical)
● Low Iq from enabled input: 200 μA (typical)
● Low Iq from disabled input: 10 μA (Typical)
● Manual input source selection (OVx)
● Over temperature protection (OTP)
TPS2121RUXT Applications

● Backup and standby power
● Input source selection
● Multiple battery management
● EPOS and barcode scanners
● Building automation and surveillance
● Tracking and telematics