Product details

Type Omnipolar switch Supply current (µA) 3500 Bandwidth (kHz) 10 Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 38 Rating Catalog Operating temperature range (°C) -40 to 125 Output Open drain
Type Omnipolar switch Supply current (µA) 3500 Bandwidth (kHz) 10 Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 38 Rating Catalog Operating temperature range (°C) -40 to 125 Output Open drain
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • In-plane, omnipolar Hall-effect switch
  • High magnetic sensitivity:
    • TMAG5123B: 4.1 mT (typical)
    • TMAG5123C: 7.5 mT (typical)
    • TMAG5123D: 10.9 mT (typical)
  • Supports a wide voltage range
    • 2.5-V to 38-V operating VCC range
    • No external regulator required
  • Wide operating temperature range
    • Ambient operating temperature range: –40 °C to +125 °C
  • 30kHz continuous conversion
  • Open-drain output
  • SOT-23 package option
  • Protection features
    • Supports up to 40-V load dump
    • Reverse battery protection to –20-V
    • Output short-circuit protection
    • Output current limitation
  • In-plane, omnipolar Hall-effect switch
  • High magnetic sensitivity:
    • TMAG5123B: 4.1 mT (typical)
    • TMAG5123C: 7.5 mT (typical)
    • TMAG5123D: 10.9 mT (typical)
  • Supports a wide voltage range
    • 2.5-V to 38-V operating VCC range
    • No external regulator required
  • Wide operating temperature range
    • Ambient operating temperature range: –40 °C to +125 °C
  • 30kHz continuous conversion
  • Open-drain output
  • SOT-23 package option
  • Protection features
    • Supports up to 40-V load dump
    • Reverse battery protection to –20-V
    • Output short-circuit protection
    • Output current limitation

The TMAG5123 is a chopper-stabilized omnipolar, active-low, in-plane, Hall-effect switch sensor. The TMAG5123 eases mechanical placement of the sensor by measuring magnetic fields parallel to the surface of the printed circuit board (PCB) in a surface mount SOT-23 package.

Different sensitivity levels are available to match the specific requirement of the application. When the applied magnetic flux density value exceeds the operating point (BOP) threshold in absolute magnetic field values, the open-drain output produces a low-state voltage. The output remains low until the applied field decreases to less than the release point (BRP) threshold also in absolute terms.

The TMAG5123 incorporates a wide 2.5-V to 38-V operating voltage range and reverse polarity protection of up to -20-V, enabling robust operation for industrial appliations.

The TMAG5123 is a chopper-stabilized omnipolar, active-low, in-plane, Hall-effect switch sensor. The TMAG5123 eases mechanical placement of the sensor by measuring magnetic fields parallel to the surface of the printed circuit board (PCB) in a surface mount SOT-23 package.

Different sensitivity levels are available to match the specific requirement of the application. When the applied magnetic flux density value exceeds the operating point (BOP) threshold in absolute magnetic field values, the open-drain output produces a low-state voltage. The output remains low until the applied field decreases to less than the release point (BRP) threshold also in absolute terms.

The TMAG5123 incorporates a wide 2.5-V to 38-V operating voltage range and reverse polarity protection of up to -20-V, enabling robust operation for industrial appliations.

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Technical documentation

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* Data sheet TMAG5123 In-Plane, High-Precision, High-Voltage, Hall-Effect Switch datasheet PDF | HTML 06 May 2021
Application brief How Hall-Effect Sensors are Used in Electronic Smart Locks (Rev. B) PDF | HTML 22 Jul 2025
Application note Position Sensing in Electronic Smart Locks Using Hall-Effect Sensors (Rev. B) PDF | HTML 22 Jul 2025
Application brief Introduction to TI Magnetic Sense Simulator Features PDF | HTML 05 Dec 2023
User guide Texas Instruments' Magnetic Sense Simulator User's Guide PDF | HTML 04 Dec 2023
Application brief Sensing Magnetic Fields In-Plane Versus Out-of-Plane (Rev. C) PDF | HTML 31 Aug 2022
Application brief Transition Detection Using Hall-Effect Sensors (Rev. A) PDF | HTML 09 Jun 2022
Technical article 6 more myths about Hall-effect sensors PDF | HTML 31 May 2022
Technical article 5 common Hall-effect sensor myths PDF | HTML 26 Apr 2022
Application note Design Considerations & Measurement Results, Mechanical Hall-Effect Flow Meters PDF | HTML 23 Mar 2022
Application brief Designing With Hall-Effect Sensors for Rotary Flow Meter Applications PDF | HTML 07 Mar 2022
Application note HMI Rocker Switch With Hall-Effect Switches PDF | HTML 21 Jan 2022
Application brief Multi-State Position Selection Using Hall-Effect Sensors PDF | HTML 13 Jan 2022
Application brief Two-State Selector Using Hall-Effect Sensors PDF | HTML 01 Dec 2021

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Evaluation board

TMAG5123EVM — TMAG5123 in-plane high-precision Hall effect switch evaluation module

The TMAG5123 is a family of high-precision, wide Vin, in-plane Hall effect sensors designed for system challenges where higher magnetic precision is needed for more flexibility in design. The TMAG5123 evaluation module is populated with a Sensata 499-P36-20 test socket, which allows for precision (...)

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HALL-PROXIMITY-DESIGN is a software tool that facilitates rapid iterative design for magnet and Hall-effect sensor systems.

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TI-MAGNETIC-SENSE-SIMULATOR TI Magnetic sensing simulation tool

The TI-MAGNETIC-SENSE-SIMULATOR (TIMSS) webtool estimates magnetic flux density and TI magnetic sensor outputs for magnetic position sensing systems. Select from our portfolio of magnetic sensors to thoroughly emulate electro-mechanical performance of your design. The tool supports various magnet (...)
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