1 Features

• Low power consumption:

– 10-Hz versions: 1.3 μA at 3 V

– 20-Hz versions: 2 μA at 3 V

– 216-Hz versions: 16 μA at 3 V

• 1.65-V to 5.5-V operating VCC range

• Magnetic threshold option (typical BOP):

– 1.8 mT with 0.6-mT hysteresis

– 2.85 mT with 1.35-mT hysteresis

– 3 mT with 0.8-mT hysteresis

– 40 mT with 6.5-mT hysteresis

• Omnipolar response

• Push-pull output

• Industry-standard package and pinout

– SOT-23 package

– X2SON package

• Operating temperature range: –40°C to +125°C

2 Applications

• Cell phones, laptops, or tablet case sensing

• Electricity meter tamper detection

• E-locks

• Smoke detectors

• Home appliance open/close detection

• Medical devices

• IoT systems

• Valve and solenoid position detection

• Contactless diagnostics or activation

3 Description

The TMAG5231 is a 2nd-generation, low-power Halleffect

switch sensor, specifically designed to optimize

the total system cost for compact, battery-operated

consumer and industrial applications.

When the applied magnetic flux density exceeds the

operating point (BOP) threshold, the device outputs a

low voltage. The output stays low until the flux density

decreases to less than the release point (BRP), and

then the device outputs a high voltage. Omnipolar

magnetic response allows the output to be sensitive

to both north and south magnetic fields.

The TMAG5231 is able to operate at very low current

consumption. To achieve 2 μA of current consumption

the device is internally power cycled at a 20-Hz rate.

The TMAG5231 is available in the industry-standard

package and pinout SOT-23 as well as X2SON.

The device operates at a VCC range of 1.65 V to 5.5 V

as well as an extended temperature range of –40°C to

125°C.