Summary of TEXAS INSTRUMENTS TMAG5123 HIGH-VOLTAGE HALL-EFFECT SWITCH
Texas Instruments TMAG5123 is a chopper-stabilized, omnipolar, in-plane Hall-effect switch in a SOT-23 package. It provides multiple sensitivity options, active-low open-drain output, wide 2.5–38 V operation with reverse polarity protection to –20 V, and robustness for industrial use including 40 V load-dump support, output protection, and −40°C to +125°C operation.
Parts used in the TMAG5123 Project:
- Texas Instruments TMAG5123B (4.1 mT typical sensitivity)
- Texas Instruments TMAG5123C (7.5 mT typical sensitivity)
- Texas Instruments TMAG5123D (10.9 mT typical sensitivity)
- SOT-23 package (surface-mount PCB package for TMAG5123)
Texas Instruments TMAG5123 High-Voltage Hall-Effect Switch 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 Texas Instruments TMAG5123 incorporates a wide 2.5V to 38V operating voltage range and reverse polarity protection of up to -20V, enabling robust operation for industrial applications.
Features
- In-plane, omnipolar Hall-effect switch
- High magnetic sensitivity
- TMAG5123B (4.1mT (typical))
- TMAG5123C (7.5mT (typical))
- TMAG5123D (10.9mT (typical))
- Supports a wide voltage range
- 2.5V to 38V operating VCC range
- No external regulator required
- Wide operating temperature range
- -40°C to +125°C ambient operating temperature range
- 30kHz continuous conversion
- Open-drain output
- SOT-23 package option
- Protection features
- Supports up to 40V load dump
- Reverse battery protection to –20V
- Output short-circuit protection
- Output current limitation
Read more: TEXAS INSTRUMENTS TMAG5123 HIGH-VOLTAGE HALL-EFFECT SWITCH
- What type of Hall-effect sensor is the TMAG5123?
It is a chopper-stabilized omnipolar, in-plane, active-low Hall-effect switch. - What sensitivity options are available for the TMAG5123?
Three sensitivity options: TMAG5123B 4.1 mT, TMAG5123C 7.5 mT, and TMAG5123D 10.9 mT typical. - What is the operating voltage range of the TMAG5123?
The TMAG5123 supports a wide operating VCC range from 2.5 V to 38 V. - Does the TMAG5123 provide reverse polarity protection?
Yes, it provides reverse polarity protection up to −20 V. - What temperature range can the TMAG5123 operate in?
It operates over an ambient temperature range of −40°C to +125°C. - How does the TMAG5123 output behave when the magnetic field exceeds the threshold?
The open-drain output produces a low-state voltage when the applied magnetic flux density exceeds the BOP threshold and remains low until the field drops below the BRP threshold. - Does the TMAG5123 require an external regulator?
No, the device does not require an external regulator due to its wide supply range. - What protection features does the TMAG5123 include?
It supports up to 40 V load dump, reverse battery protection to −20 V, output short-circuit protection, and output current limitation. - What package is the TMAG5123 available in for PCB mounting?
It is available in a surface-mount SOT-23 package.
