A1150, A1152, A1153, A1155, A1156, A1157, and A1158: Chopper-Stabilized, 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 the Allegro™ advanced BiCMOS wafer fabrication process, which implements a patented high frequency, 4-phase, chopper-stabilization technique. This technique achieves magnetic stability over the full operating temperature range, and eliminates offsets inherent in devices with a single Hall element that are exposed to harsh application environments.

The A115x family has a number of automotive applications. These include sensing seat track position, seat belt buckle presence, hood/trunk latching, and shift selector position.

Two-wire unipolar switches are particularly advantageous in cost-sensitive applications because they require one less wire for operation versus the more traditional open-collector output switches. Additionally, the system designer inherently gains diagnostics because there is always output current flowing, 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 three 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. The UB is a 2-pin, ultra-mini, single inline package (SIP) for through-hole mounting. All three packages are lead (Pb) free, with 100% matte tin leadframe plating.

SAMPLE & BUY

Astrorep Inc. (Allegro and Sanken Semiconductors, Sanken Power Supplies)
141 John Street, Suite 300
Babylon, NY 11702
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: donna.tweedy@astrorepinc.com

If this is not your local representative, find your local sales rep here.

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • 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
  • Extended Operating Ambient temperature range, -40°C to 150°C
  • UB package option with integrated 0.1 µF bypass capacitor
  • -F option: Factory set temperature coefficient (TC) for use with
    ferrite magnets
Packages

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Product Image Functional Block Diagram Product Image

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A1150LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1150LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1150LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1152LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1152LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1152LUB-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1152LUBLU-F-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1152LUBLU-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1153LLHLT-F-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1153LLHLX-F-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1153LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1153LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1153LUBTN-F-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1153LUBTN-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1155LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1155LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1155LUBTN-F-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1155LUBTN-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1156LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1156LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1156LUB-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1156LUBTN-F-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1156LUBTN-T 2-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1157LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1157LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1157LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1158LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1158LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1158LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

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