TPS2121RUXR Power Multiplexers: 12-VFQFN, Pinout, Datasheet

The TPS2121RUXR devices are Dual-Input, Single-Output (DISO) Power Multiplexers (MUX) that are ideal for a wide range of systems with various power sources. The devices will detect, select, and transition between accessible inputs automatically.

Priority can be allocated to the highest input voltage automatically or manually to a lower voltage input to allow both ORing and Source Selection actions. To pick an input source, a priority voltage supervisor is utilized.

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• Wide operating range: 2.8 V to 22 V

– Absolute maximum input voltage of 24 V

• Low RON resistance:

– TPS2120: 62 mΩ (typical)

– TPS2121: 56 mΩ (typical)

• Adjustable overvoltage supervisor (OVx):

– Accuracy < ±5%

• Adjustable priority supervisor (PR1):

– Accuracy < ±5%

• TPS2121 Supports external voltage reference (CP2) with an accuracy of <1%

• Output current limit (ILM):

– TPS2120: 1 A – 3 A

– TPS2121: 1 A – 4.5 A

• 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)

• Backup and standby power

• Input source selection

• Multiple battery management

• EPOS and barcode scanners

• Building automation and surveillance

• Tracking and telematics

TPS2121RUXR Typical Application Circuit

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