MLX92344 2-Wire 2-bit Switch
The MLX92344 is a highly flexible, PCB-less sensor IC for contactless detection of up to four positions over a standard 2-wire interface, eliminating bulky microswitches and simplifying automotive body electronics.
Top features
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Up to 4 output states with a 2-wire current interface
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Programmable currents from 3mA to 28mA
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Programmable dual magnetic thresholds pairs
Product description
The MLX92344 is a revolutionary monolithic sensor IC sensitive to perpendicular or lateral magnetic fields. Designed to meet the stringent demands of modern automotive body electronics, it introduces an industry-first approach to programmable multi-position detection within a single device.
By providing up to four discrete output states over a standard two-wire interface, a single MLX92344 can fully replace complex, space-consuming dual-sensor or multi-microswitch configurations. The supply current for each state is independently programmable from 3 mA to 28 mA, enabling tight state separation (±0.5 mA tolerances) that perfectly aligns with existing ECU input windows without requiring hardware changes.
Developed as a Safety Element out of Context (SEooC) in accordance with ISO 26262 (ASIL B), the MLX92344 features robust on-chip diagnostic mechanisms. In the event of a fault, the device transitions to a dedicated safe state.
Furthermore, End-of-Line (EoL) programmability allows manufacturers to calibrate away mechanical assembly tolerances directly in production to maximize system accuracy.
Applications
- Automotive Body Electronics: Seat track position monitoring (3 or 4 positions for adaptive airbag deployment), e-frunk / front hood latch locking mechanisms, steering column extension detection, smart charging port doors, and smooth soft-closing door systems.
- Industrial & Industrial Mobility: Robotics, smart appliances, smart buildings, and energy management systems.
Features and benefits
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Up to 4 output states with a 2-wire current interface
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Programmable currents from 3mA to 28mA
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Programmable dual magnetic thresholds pairs
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Programmable magnetic Latch, Unipolar or Omnipolar Switch functions
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Temperature compensation coefficient in the range -2000 to 0 ppm/°C
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Wide magnetic range from 0.5mT to 200mT (40mT for IMC variant)
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Optional IMC integration for lateral magnetic sensing (X or Y)
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Diagnostics
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Integrated self-diagnostic functions activating a dedicated Safe State
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Parallel or Sequential diagnostic modes
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Operating voltage range from 2.7 V to 28 V (32 V AMS)
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Operating temperature from -40°C to +150°C
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Certifications
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ISO 26262 ASIL B SEooC
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AEC-Q100
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ESD level (8 kV HBM, 25 kV system-level)
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Packages, RoHS compliant
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UA (Through hole)
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UA with integrated capacitor (PCB-less)
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TSOT23 (Surface mount)
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Integrated protections
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Reverse supply voltage protection
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Thermal protection
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Under-voltage reset
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Documents and tools
Datasheet(s)
Product flyer(s)
Selection guide(s)
Environmental
IC handling and assembly
Tools
If you have further questions please contact our team
Melexis Homepage: MLX92344 2-wire 2-bit Switch 
Melexis News (EN): Melexis introduces the world’s first 2-wire 2-bit Hall switch
Melexis News (DE): Melexis führt den weltweit ersten 2-Draht 2-Bit Hall-Schalter ein
Melexis Tool: Latch & Switch Sensor ICs Selection Tool
If you have further questions please contact our team.
MLX92344 in 4-Position Magnet Detection Application
MLX92344 as 3-Position Seat Track Sensor for Adaptive Airbag Application
MMLX92344 in Charge Flap Position Sensor Application
MLX92344 in Steering Column Position Sensor Application
MLX92344 in Frunk Lid Position Sensor Application
MLX92344 World's first 2-wire 2-bit Switch
If you have further questions please contact our team.
Ordering Options
Temperature Code:
- L = Temperature range -40°C ... +150°C
Package Code:
- UA = TO92-3L package (THT)
- SE = TSOT23-3L package (SMD)
Option Code:
- 0xx: Perpendicular sensitive
- 1xx: Integrated capacitor (UA package only, perpendicular sensitive)
- 3xx: Integrated capacitor & IMC (UA package only, lateral sensitive)
The following variants can be ordered
MLX92344LSE-AAA-000 [ TSOT23-3L | Perpendicular sensitive | -40°C...+150°C ]
MLX92344LUA-AAA-100 [ TO92-3L | Integrated Capacitor | Perpendicular sensitive | -40°C...+150°C ]
MLX92344LUA-AAA-300 [ TO92-3L | Integrated Capacitor | IMC Structure | Lateral sensitive | -40°C...+150°C ]
Melexis Tool: Latch & Switch Sensor ICs Selection Tool
If you need further information on product variants and scale prices please contact us.
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