TMAG5231

Part: TMAG5231A1CQDBZR — Texas Instruments

Type: Low-Power Hall Effect Switch (Omnipolar, Push-Pull Output)

Description: 1.65–5.5 V low-power omnipolar Hall effect switch with push-pull output. The A1C version has a typical 1.8 mT operate point, 0.6 mT hysteresis, a 10 Hz sampling rate and 1.3 μA average current at 3 V.

Operating Conditions:

• Supply voltage: 1.65–5.5 V
• Operating temperature: -40 to 125 °C
• Output current: -5 to 5 mA
• Output voltage: 0 to 5.5 V

Absolute Maximum Ratings:

• Max supply voltage: 5.5 V (min -0.3 V)
• Output pin voltage: GND - 0.3 V to VCC + 0.3 V
• Output pin current: ±5 mA
• Max junction temperature: 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• Average current (xxC versions, 10 Hz): 1.3 μA typ at VCC = 3 V over temperature
• Sampling frequency (xxC versions): 7 / 10 / 14.5 Hz (min/typ/max); period 77 / 100 / 143 ms
• Magnetic operate point BOP (TMAG5231Axx, 25 °C): ±0.9 / ±1.8 / ±2.7 mT (min/typ/max)
• Magnetic release point BRP (TMAG5231Axx, 25 °C): ±0.3 / ±1.2 / ±2.2 mT
• Magnetic hysteresis BHYS (TMAG5231Axx, 25 °C): ±0.1 / ±0.6 / ±1.4 mT
• VOH: VCC-0.35 V min, VCC-0.1 V typ at IOUT = -0.5 mA
• VOL: 0.1 V typ, 0.3 V max at IOUT = 0.5 mA
• Peak current ICC(PK): 0.8 / 1.25 / 2 mA; sleep current ICC(SLP): 0.8 typ, 1.4 μA max
• Power-on time: 65 / 140 / 425 μs
• RθJA: 227.4 °C/W (SOT-23), 218.4 °C/W (X2SON)
• ESD: ±5500 V HBM, ±500 V CDM

Features:

• Low power consumption: 1.3 μA (10 Hz), 2 μA (20 Hz) or 16 μA (216 Hz) at 3 V depending on version
• 1.65–5.5 V operating VCC range
• Omnipolar response (sensitive to north and south poles)
• Push-pull output
• Magnetic threshold options of 1.8, 2.85, 3 and 40 mT (typical BOP)
• Industry-standard package and pinout
• Operating temperature range of -40 to 125 °C

Applications:

• Cell phone, laptop and 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

Package:

• SOT-23 (DBZ), 3 pins, 2.92 mm × 1.30 mm
• X2SON (DMR), 4 pins, 1.10 mm × 1.40 mm

• 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 B OP ):
• -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

• 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

TMAG5231

SLYS042D - AUGUST 2021 - REVISED SEPTEMBER 2022

Figure 6-2. DMR Package 4-Pin X2SON Top View

Figure 6-1. DBZ Package 3-Pin SOT-23 Top View

for VCC = 1.65 V to 5.5 V, over operating free-air temperature range (unless otherwise noted)

over operating free-air temperature range (unless otherwise noted) (1)

over operating free-air temperature range (unless otherwise noted)

The TMAG5231 device is typically used to detect the proximity of a magnet. The magnet is often attached to a movable component in the system.

• (1) For all available packages, see the orderable addendum at the end of the data sheet.

Block Diagram