Part A1131
Description Two-Wire Unipolar Vertical Hall-Effect Switches
Manufacturer Allegro MicroSystems
Size 1.25 MB
Allegro MicroSystems
A1131

Overview

The A1130, A1131, and A1132 are vertical Hall-effect sensor ICs developed in accordance with ISO 26262:2011. The A113x devices feature integrated continuous diagnostic features and a safe output state that supports a functional safety level of ASIL B.

  • ISO 26262:2011 compliant □ Achieves ASIL B as a stand-alone component □ A2-SIL™ documentation available including FMEDA and Safety Manual □ Continuously operating background diagnostics □ Integrated regulator undervoltage monitor
  • Magnetic sensing parallel to surface of package
  • Internal current regulator for two-wire operation
  • Highly sensitive unipolar switch thresholds
  • Operation down to 3 V
  • Selection of temperature coefficients (TC) to match magnet properties
  • Small package sizes, 3-pin SOT23W and SIP
  • Automotive-grade ruggedness □ Qualified per AEC-Q100 □ Internal protection circuits enable 40 V load dump compliance □ Operation up to 165°C junction temperature □ Low temperature drift and high physical stress resistance □ Solid-state reliability □ Reverse-battery and overvoltage protection PACKAGES 3-Pin SIP (Suffix UA) 3-Pin SOT23W (Suffix LH) Not to scale