Allegro MicroSystems APS11203/APS12203 24V Hall-Effect Switch & Latch
Allegro MicroSystems APS11203 and APS12203 24V Hall-Effect Switches and Latches are 3-wire, 24V-ready switch/latch sensors that offer versatile magnetic sensing and ultra-low jitter performance, designed for automotive and industrial applications. These AEC-Q100-qualified, third-generation Hall-effect switches/latches feature chopper-stabilization for precision performance over industrial and automotive temperature ranges. Omnipolar and unipolar operation models with high and low polarity output options are available. The ICs are temperature-stable and offer precision performance over an extended junction temperature range up to +165°C. These Hall-effect devices provide contactless sensing of magnetic fields and an open-drain output that actuates in response to the detected field strength at the branded package face. In addition, APS11203 and APS12203 are designed to maximize system robustness, featuring reverse-battery protection, an output current limiter, and overvoltage protection. The Allegro APS11203 and APS12203 components deliver unprecedented performance and value across automotive, industrial, and consumer applications.
Features
- 2.7V to 26V operation
- AEC-Q100 qualified
- Omnipolar and unipolar switch threshold options
- High and low sensitivity magnetic switch point options
- Choice of output polarity
- Open drain output
- Chopper stabilization
- Low switch point drift over temperature
- Insensitive to physical stress
- Solid-state reliability
- Industry-standard 3-pin SOT23-3 package and pinout
- Lead-free and RoHS-compliant
Applications
- Automotive
- Power closures
- Power steering
- In-cabin motors
- Wiper position
- Gear-shift selectors
- Seat belt buckles
- Break switches
- Headlight positions
- Hood latch positions
- Trottle and valve positions
- Mirror positions
- Industrial
- Motor encoders
- Commutation/index sensing
- Brushless DC (BLDC) motors
- Fan motors
- Smart meters
- Home appliances
- Position detection
- e-Mobility
- Robotics
- Building automation
Specifications
- 28V maximum supply voltage, 2.7V to 26V range
- -18V maximum reverse supply voltage
- 3mA maximum supply current, 1.5mA typical
- 30V maximum output-off voltage
- 30mA maximum output sink current
- 25µs maximum power-on time
- -5mA maximum reverse battery current
- Thermal resistance
- 309.2°C/W for the 2-layer PCB package MD (1S0P)
- 197.9°C/W for the 4-layer PCB package MD (2S2P)
- Operating temperatures
- -40°C to +150°C for APS1x203LMDALX
- -40°C to +125°C for APS1x203KMDALX
- +165°C maximum junction
- Chopper stabilization and output
- 500kHz typical chopping frequency
- 10µs maximum propagation delay, 5µs typical
- 320ns typical jitter
- 2µs maximum output rise/fall time
- 500mV maximum output saturation voltage
- 30mA to 60mA output short-circuit current limit
- 10µA maximum output leakage current
- ESD ratings
- 7kV maximum Human Body Model (HBM)
- 1kV maximum Charged-Device Model (CDM)
Functional Block Diagram
Typical Application Circuit
Model of Chopper Stabilization Circuit (Dynamic Offset Cancellation)
Magnetic-Sensing Orientation
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Temperature-stable and suited for operation over extended junction temperature ranges up to +165°C.