1 Features
• Supply Range of 1.65 V to 5.5 V
• Adjustable BOP from 2 mT to 15 mT
– Using 2-kΩ to 15-kΩ resistors
– or 160-mV to 1200-mV voltage source
• Omnipolar Hall switch
• Push-Pull output
• Low power consumption
– 20-Hz sampling rate: 1.4 μA at 3.3 V
• Industry-standard package and pinout
– SOT-23 package
• –40°C to 125°C operating temperature range

2 Applications
• Battery-critical position sensing
• Electricity meter tamper detection
• Cell phone, laptop, or tablet case sensing
• E-locks, smoke detectors, appliances
• Medical devices, IoT systems
• Valve or solenoid position detection
• Contactless diagnostics or activation

3 Description
The TMAG5328 device is a high precision, low-power,
resistor adjustable Hall effect switch sensor operating
at low voltage.
The external resistor sets the BOP value the device
will operate from. By following a simple formula, it
is easy to calculate what resistor value is needed to
set up the right BOP value. The Hysteresis value is
fixed and therefore the BRP value is defined as BOPHysteresis.
With this adjustable threshold feature, the TMAG5328
allows for easy and quick prototyping, fast design to
market, reuse across different platforms and easy last
minute modifications in case of unexpected changes.
When the applied magnetic flux density exceeds the
BOP threshold, the device outputs a low voltage. The
output stays low until the flux density decreases to
less than BRP, and then the output drives a high
voltage. By incorporating an internal oscillator, the
device samples the magnetic field and updates the
output at a rate of 20 Hz for the lowest current
consumption. The TMAG5328 features an omnipolar
magnetic response.
The device operates from a VCC range of 1.65 V
to 5.5 V, and is packaged in a standard SOT-23-6
package.