A1190, A1192, and A1193 Programmable, Chopper-Stabilized, Two-Wire Hall-Effect Switches Features and Benefits Description AEC-Q100 automotive qualified The A1190, A1192, and A1193 comprise a family of two- High-speed, 4-phase chopper stabilization wire, unipolar, Hall-effect switches, which can be trimmed Low switchpoint drift throughout temperature range by the user at end-of-line to optimize magnetic switchpoint Low sensitivity to thermal and mechanical stresses accuracy in the application. These devices are produced on On-chip protection the Allegro advanced BiCMOS wafer fabrication process, Supply transient protection which implements a patented high-frequency, 4-phase, Reverse-battery protection chopper stabilization technique. This technique achieves On-board voltage regulator magnetic stability over the full operating temperature range, 3 to 24 V operation and eliminates offsets inherent in devices with a single Hall Solid-state reliability element that are exposed to harsh application environments. Robust EMC and ESD performance The A119x family has a number of automotive applications. Field programmable for optimized switchpoints These include sensing seat track position, seat belt buckle Industry-leading ISO 7637-2 performance through use of presence, hood/trunk latching, and shift selector position. proprietary, 40 V clamping structure Two-wire unipolar switches are particularly advantageous in cost-sensitive applications because they require one less wire Packages 3-pin ultramini SIP for operation versus the more traditional open-collector output 1.5 mm 4 mm 3 mm 3-pin SOT23-W switches. Additionally, the system designer inherently gains (suffix UA) 2 mm 3 mm 1 mm diagnostics because there is always output current flowing, (suffix LH) which should be in either of two narrow ranges. Any current level not within these ranges indicates a fault condition. All family members are offered in two package styles. The LH is a SOT-23W style, miniature, low-profile package for surface- mount applications. The UA is a 3-pin, ultra-mini, single inline package (SIP) for through-hole mounting. Both packages are lead (Pb) free, with 100% matte-tin leadframe plating. Approximate footprint Functional Block Diagram V+ VCC Regulator Program / Lock I Adjust CC To all subcircuits Clock/Logic Offset Adjust 0.01 F Polarity Amp Low-Pass Schmitt Filter Trigger GND GND UA package only A1190-DS, Rev. 5 Dynamic Offset Cancellation Sample and HoldA1190, A1192, Programmable, Chopper-Stabilized, and A1193 Two Wire Hall-Effect Switches Selection Guide Output (I ) in Supply Current Magnetic Operate CC 1 Part Number Package Packing South Polarity at I Point, B CC(L) OP Field (mA) (G) 2 A1190LLHLT-T LH (Surface mount) 7-in. reel, 3000 pieces/reel A1190LLHLX-T LH (Surface mount) 13-in. reel, 10000 pieces/reel Low 2 to 5 3 A1190LUA-T UA (Through hole) Bulk, 500 pieces/bag 2 A1192LLHLT-T LH (Surface mount) 7-in. reel, 3000 pieces/reel A1192LLHLX-T LH (Surface mount) 13-in. reel, 10000 pieces/reel Low 10 to 200 3 A1192LUA-T UA (Through hole) Bulk, 500 pieces/bag 5 to 6.9 2 A1193LLHLT-T LH (Surface mount) 7-in. reel, 3000 pieces/reel A1193LLHLX-T LH (Surface mount) 13-in. reel, 10000 pieces/reel High 3 A1193LUA-T UA (Through hole) Bulk, 500 pieces/bag 1 Contact Allegro for additional packing options. 2 These variants available only through authorized distributors. 3 Contact factory for availability. Absolute Maximum Ratings Characteristic Symbol Notes Rating Unit Forward Supply Voltage V 28 V CC Reverse Supply Voltage V 18 V RCC Magnetic Flux Density B Unlimited G Operating Ambient Temperature T Range L 40 to 150 C A Maximum Junction Temperature T (max) 165 C J Storage Temperature T 65 to 170 C stg Pin-Out Diagrams Terminal List Table Name 3 Number Function LH package UA package Connects power supply to chip 1 VCC VCC used to apply programming signal NC LH package: no connection, it is highly recommended that this 1 2 2 NC GND pin be tied to GND 2 3 1 UA package: ground terminal LH Package UA Package 3 GND GND Ground terminal Allegro MicroSystems, LLC 2 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000 www.allegromicro.com