Unipolar 3-wire Hall proximity sensor
MLX92231 Melexis
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The MLX92231 targets applications that require Hall-effect switch magnetic characteristics. It features a low voltage capability allowing to interface with microcontrollers and other digital ICs placed on supply lines at <3V.
Top features
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Wide operating voltage range: from 2.7 V to 24 V
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Accurate switching thresholds
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Reverse supply voltage protection
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Output current limit with auto-shutoff
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Under-voltage lockout protection
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Thermal protection
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Traceability with integrated unique ID
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High ESD rating / Excellent EMC performance
Unipolar 3-wire Hall proximity sensor - MLX92231
Product description
Melexis’ Latch & Switch sensors use an innovative magnetic technology that allows the measurement of the lateral magnetic flux component.
The MLX92231 targets applications requiring Hall-effect switch magnetic characteristics. Constructed on a proprietary mixed signal CMOS process technology, the MLX92231 integrate a Hall sensor element with advanced offset cancellation mechanism, a voltage regulator and an open-drain output driver in industry standard 3-pin SIP and TSOT23 packages.
The programmable architecture enables high accuracy switching thresholds and an integrated factory programmed thermal compensation value to be set. These features simplify manufacturing of precision, thermally stable sensor modules using low cost magnet materials, while avoiding complex, expensive temperature testing.
Covering a wide operational voltage range (2.7 V to 24 V) and supporting an extensive operational temperature range (-40 °C to +150 °C), these AEC-Q100-qualified devices are highly suited to use in the most demanding of automotive and industrial settings. Output current limit, under-voltage lockout and thermal shutdown ensure on-going reliability, while also lowering the overall bill of materials required. Target automotive applications for the MLX92231 and MLX92211 include seat positioning systems, clutch position sensors, brake light sensors. Both ICs are also suitable for industrial position sensing roles in robotics, factory automation equipment, material handling, valve positions and process controls.
The MLX92231 feature a low voltage capability, differentiating them from other Hall-effect sensor solutions on the market, by allowing them to interface with microcontrollers and other digital ICs placed on supply lines at <3V. This maximizes their versatility and permits incorporation into system designs that are beyond the scope of competing devices. The built-in reverse voltage protection feature does not require a serial resistor or diode on the supply line, so that even remote sensors can be specified for low voltage operation down to 2.7 V while still being reverse voltage tolerant.
Features and benefits
-
Wide operating voltage range: from 2.7 V to 24 V
-
Accurate switching thresholds
-
Reverse supply voltage protection
-
Output current limit with auto-shutoff
-
Under-voltage lockout protection
-
Thermal protection
-
Traceability with integrated unique ID
-
High ESD rating / Excellent EMC performance
Documents and tools
Datasheet(s)
Selection guide(s)
Related tech talks
Videos
Lateral sensing with integrated IMC for DC/BLDC motor applications
As brushless DC (BLDC) motors become an increasingly popular choice for many applications including blowers, cooling fans and pumps, more sophisticated control is required. By integrating an IMC into products, such as the MLX92211 IC, surface mount sensing is available, thereby simplifying the production process and reducing the space required.
Step-by-step guide to Latch & Switch portfolio
During this video, Thomas Strauven, Applications Engineer for Latch & Switch, guides you through the Melexis selection guide for the Latch & Switch portfolio. This selection guide is a parametric document that allows you to find and compare the specifications and features of our extensive Latch & Switch portfolio.
Magnetic Latch Switch: Experience matters
25+ years in Latch & Switch has given Melexis a unique view of market needs. Decisions taken in 1993 to focus on CMOS technology and TSOT packaging are just as valid today as they were then.
