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.

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