APS12450LLHALX-1SLA Datasheet PDF - Allegro MicroSystems

DESCRIPTION
   The APS12450 three-wire planar Hall-effect sensor integrated circuits (ICs) were developed in accordance with ISO26262:2011 as a hardware safety element out of context with ASIL B capability (pending assessment) for use in automotive safety-related systems when integrated and used in the manner prescribed in the applicable safety manual and datasheet. The enhanced three-wire interface provides interconnect open/short diagnostics and a fault state to communicate diagnostic information while maintaining compatibility with legacy three-wire systems. The continuous background diagnostics are transparent to the host system and results in a reduced fault tolerant time.

FEATURES AND BENEFITS
• Functional safety
   □ Developed in accordance with ISO 26262:2011 to meet
      ASIL B requirements (pending assessment)
   □ Integrated background diagnostics for:
      ○ Signal path
      ○ Regulator
      ○ Hall plate and bias
      ○ Overtemperature detection
      ○ Nonvolatile memory
   □ Defined fault state
• Multiple product options
   □ Magnetic polarity, switchpoints, and hysteresis
   □ Temperature coefficient
   □ Output polarity
• Reduces module bill-of-materials (BOM) and assembly cost
   □ ASIL B sensor can replace redundant sensors
   □ Integrated overvoltage clamp and reverse-battery diode
• Automotive-grade ruggedness and fault tolerance
   □ Extended AEC-Q100 Grade 0 qualification
      ○ Operation to 175°C junction temperature
   □ 3 to 30 V operating voltage range
   □ ±8 kV HBM ESD
   □ Overtemperature indication

TYPICAL APPLICATIONS
• Automotive and industrial safety systems
• Seat/window motors
• Sun roof/convertible top/tailgate/liftgate actuation
• Brake and clutch by wire actuators
• Engine management actuators
• Electric power steering (EPS)
• Transmission shift actuator