Product details


IN1, IN2 input voltage (Min) (V) 2.8 IN1, IN2 input voltage (Max) (V) 22 IN1 rDS(on) (Typ) (mOhm) 62 IN2 rDS(on) (Typ) (mOhms) 62 IN1 output current (Max) (A) 2 IN2 output current (Max) (A) 2 Number of Inputs 2 Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Power muxes

Package | Pins | Size

DSBGA (YFP) 20 4 mm² 1.958 x 1.558 open-in-new Find other Power muxes


  • Wide operating range: 2.8 V to 22 V
    • Absolute maximum input voltage of 24 V
  • Low RON resistance:
    • TPS2124: 62 mΩ (typical)
  • Adjustable over-voltage supervisor (OVx):
    • Accuracy < ±5%
  • Adjustable priority supervisor (PR1):
    • Accuracy < ±5%
  • Output current limit (ILM):
    • TPS2124: 1 A – 2.5 A
  • Channel status indication (ST)
  • Adjustable input settling time (SS)
  • Adjustable output soft start time (SS)
  • Low IQ from enabled input: 200 µA (typical)
  • Low IQ from disabled input: 15 µA (Typical)
  • Manual input source selection (OVx)
  • Over-temperature protection (OTP)

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The TPS2124 device is a Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) that is well suited for a variety of systems having multiple power sources.  The device will Automatically Detect, Select, and Seamlessly Transition between available inputs.

 Priority can be automatically given to the highest input voltage or manually assigned to a lower voltage input to support both ORing and Source Selection operations. A priority voltage supervisor is used to select an input source.

 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 TPS2124 device is available in a WCSP package characterized for operation for a temperature range of –40°C to 125°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TPS2124 2.8-V to 22-V Priority Power MUX with Seamless Switchover datasheet Jan. 27, 2020
User guides TPS2124 Evaluation Module Apr. 08, 2020
Technical articles How can a load switch extend your device’s battery life? Mar. 20, 2018
Technical articles How and why you should use load switches for power sequencing Feb. 06, 2018
Technical articles How to use load switches and eFuses in your set-top box design Nov. 23, 2017
Technical articles Don’t leave it floating! Power off your outputs with quick output discharge Dec. 09, 2016

Design & development

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Hardware development

document-generic User guide
The TPS2124 is a dual input, single-output power multiplexer that will automatically detect, select, and seamlessly transistion between available inputs. Active current limting protects against overcurrent, and always-on reverse current protection blocks reverse current. Priority can be (...)
  • Adjustable overvoltage protection
  • Adjustable priority voltage input
  • Adjustable soft start/input settling time
  • Seamless switchover between input sources

Design tools & simulation

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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

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DSBGA (YFP) 20 View options

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