A1155 - Allegro MicroSystems

A1155 Two Wire Hall-Effect Switches

The A1150, A1152, A1153, A1155, A1156, A1157, and A1158 comprise a family of two-wire, unipolar, Hall-effect switches, which are factory-trimmed to optimize magnetic switchpoint accuracy.These devices are produced on theAllegro™ advanced BiCMOS wafer fabrication process, which implements a high-frequency, 4-phase, chopper-stabilization technique. This techni.

Features

• AEC-Q100 automotive qualified
• High-speed, 4-phase chopper stabilization
• Low switchpoint drift throughout temperature range
• Low sensitivity to thermal and mechanical stresses
• On-chip protection □□Supply transient protection □□Reverse-battery protection □□On-board voltage regulator □□3 to 24 V operation
• Solid-state reliability
• Robust EMC and ESD performance
• Industry-leading ISO 7637-2 performance through use of proprietary, 40 V clamping structures Continued on the next page… PACKAGES 3-pin SOT23-W 2 mm × 3 mm × 1 mm (suffix LH) 3-pin ultramini SIP 1.5 mm × 4 mm × 3 mm .