Product details

Type Omnipolar switch Supply current (µA) 3500 Bandwidth (kHz) 10 Rating Catalog Operating temperature range (°C) -40 to 125 Output Open drain
Type Omnipolar switch Supply current (µA) 3500 Bandwidth (kHz) 10 Rating Catalog Operating temperature range (°C) -40 to 125 Output Open drain
SOT-23 (DBZ) 3 6.9204 mm² (2.92 mm × 2.37 mm)
  • 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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Top documentation Type Title Format options Date
* Data sheet TMAG5123 In-Plane, High-Precision, High-Voltage, Hall-Effect Switch datasheet PDF | HTML May 6, 2021
Application brief How Hall-Effect Sensors are Used in Electronic Smart Locks (Rev. B) PDF | HTML Jul 22, 2025
Application note Position Sensing in Electronic Smart Locks Using Hall-Effect Sensors (Rev. B) PDF | HTML Jul 22, 2025
Application brief Introduction to TI Magnetic Sense Simulator Features PDF | HTML Dec 5, 2023
User guide Texas Instruments' Magnetic Sense Simulator User's Guide PDF | HTML Dec 4, 2023
Application brief Sensing Magnetic Fields In-Plane Versus Out-of-Plane (Rev. C) PDF | HTML Aug 31, 2022
Application brief Transition Detection Using Hall-Effect Sensors (Rev. A) PDF | HTML Jun 9, 2022
Technical article 6 more myths about Hall-effect sensors PDF | HTML May 31, 2022
Technical article 5 common Hall-effect sensor myths PDF | HTML Apr 26, 2022
Application note Design Considerations & Measurement Results, Mechanical Hall-Effect Flow Meters PDF | HTML Mar 23, 2022
Application brief Designing With Hall-Effect Sensors for Rotary Flow Meter Applications PDF | HTML Mar 7, 2022
Application note HMI Rocker Switch With Hall-Effect Switches PDF | HTML Jan 21, 2022
Application brief Multi-State Position Selection Using Hall-Effect Sensors PDF | HTML Jan 13, 2022
Application brief Two-State Selector Using Hall-Effect Sensors PDF | HTML Dec 1, 2021

Design & development

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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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Simulation tool

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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Calculation tool

HALL-PROXIMITY-DESIGN — Magnetic Sensing Proximity Tool

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

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SOT-23 (DBZ) 3 Ultra Librarian

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