APS11900: Two-Wire End-of-Line Programmable Hall-Effect Switch/Latch

APS11900 devices are highly programmable, two-wire planar Hall-effect sensor integrated circuits (ICs) developed in accordance with ISO 26262:2011 (pending assessment). They include internal diagnostics that support functional safety. The enhanced two-wire current-mode interface provides interconnect open/short diagnostics and adds a Safe State to communicate diagnostic information while maintaining compatibility with legacy two-wire systems. Two-wire sensors are well-suited to safety applications, especially those involving long wire harnesses.

编程可以在线尾进行，以优化每单位或每个模块的传感器。用户可以选择磁性开关点，温度系数和滞后，
and whether the device responds to north or south magnetic fields (unipolar switch) or both (bipolar latch or omnipolar switch). The response can be matched to SmCo, NdFeB, or low-cost ferrite magnets. There is a choice of two output current levels and either output polarity. In addition to a benchtop programmer (ASEK) for development and evaluation, universal software drivers are available to facilitate programming in a production environment.

APS11900 sensors are engineered to operate in the harshest environments with minimal external components. They are qualified beyond the requirements of AEC-Q100 Grade 0 and will survive
175°C结温的延长操作。这些单片IC包括片上的反向电池保护，过压保护（40V负载转储），ESD保护，过热检测和直接从汽车电池总线运行的内部电压调节器。这些集成功能减少了最终产品比尔 - 材料（BOM）和装配成本。
The available SIP package with integrated discrete components (UC) enables PCB-less applications by incorporating all of the EMC protection components into the IC package. Other package options include industry-standard surface-mount SOT (LH) and throughhole SIP (UA) packages. All three packages are RoHS-compliant and lead (Pb) free with 100% matte-tin-plated leadframes.

为一个功能相当的情况下factory-programmed two-wire switch or latch is preferred, refer to the APS11500 and APS12400 device families, respectively.

TYPICAL APPLICATIONS

• 汽车和工业安全系统
• Seat position detection
• Seat belt buckles
• Hood/trunk/door latches
• Sun roof/convertible top/tailgate/liftgate actuation
• Brake/clutch pedals
• Electric power steering (EPS)
• 传播s and shift selectors
• Wiper motors

APS11900是根据ISO 26262：2011制定的，作为硬件安全元件，与ASIL的功能（未决确认）在集成和使用适用的安全手册和数据表中的规定的方式中使用时使用的功能（未决的确认）。有关详细信息，请与您联系local Allegro field applications engineer or sales representative.

• Developed in accordance with ISO 26262:2011
  
  • Internal diagnostics and a defined Safe State
• Highly programmable
  • Magnetic polarity, switchpoints, and hysteresis
  • 温度系数（支持SMCO，NDFEB和铁氧体磁铁）
  • 输出极性和电流水平
• 减少模块材料清单（BOM）和装配成本
  • Integrated overvoltage clamp (40 V load dump) and reverse-battery diode
  • 集成串联电阻和旁路电容（UC封装）
  • Enables PCB-less sensor modules
• 汽车级坚固性和容错
  • Extended AEC-Q100 qualification
  • 操作从-40°C至175°C结温
  • 3 to 24 V operating voltage range
  • 高EMC / ESD免疫力
  • 过高的指示