1 Features

• Supply range:

– From –40°C to 85°C: 1.65V to 5.5V

– From 85°C to 125°C: 1.65V to 3.6V

• In-plane magnetic field detection

• Omnipolar response

• Active low, push-pull output

• Magnetic operate point (BOP): ±3mT

• Magnetic release point (BRP): ±2.2mT

• Duty cycle operation to minimize ICC

– 5Hz: 0.55μA (preview)

– 40Hz: 2.7μA

• Industry standard package and pinout

– 3-pin SOT-23 (VCC, GND, OUT)

2 Applications

• Door and window sensor

• Appliance door open/close

• Electricity meter tamper detection

• Electronic smart lock

• Smoke detector push button

• Food processor accessory detection

3 Description

The TMAG5233 is a low cost, in-plane Halleffect

switch designed to replace TMR, AMR and

Reed switches used in magnetic position sensing

applications.

The TMAG5233 has an omnipolar magnetic response

and enables the device to react to both north and

south magnetic poles. When the applied magnetic flux

density through the sensor axis of sensitivity exceeds

the operate point threshold (BOP), the device outputs

a low voltage. The output stays low until the magnetic

flux density decreases to less than the release point

threshold (BRP), after which the device outputs a high

voltage. The D1E device version has a BOP threshold

of 3mT and BRP threshold of 2.2mT.

To minimize power consumption, the TMAG5233 is

internally duty-cycled at 40Hz (D1E device version)

operating with an average current consumption of

2.7μA. The device has a push-pull CMOS output

which eliminates the need for an external pullup

resistor, and is available in an industry-standard

SOT-23 package.