Power management occurs in the background and is transparent to the host system, making them an immediate upgrade for existing Hall-effect switches or a solid-state replacement for mechanical microswitches or reed switches.
"Thanks to the APS11700/760's unique combination of ruggedness and ultra-low power consumption, there is finally a reliable, solid-state upgrade for reed and microswitches, even in the most power-sensitive applications where the sensor will be connected directly to the battery," explains Jim Judkins, product line manager for position sensor ICs at Allegro.
These monolithic devices include a standard Hall-effect board or a vertical Hall-effect board, a small-signal amplifier, chopper stabilization, a Schmitt trigger, an automatic power management controller, and an NMOS output transistor. The APS11700 uses a standard planar Hall effect sensing element, while the APS11760 implements AVHT technology in the form of a silicon-based vertical Hall effect sensing element. The APS11760 devices are therefore sensitive to magnetic flux parallel to the face of the IC package, mimicking the in-plane sensitivity of common reed switches.
The APS11700/760 devices come pre-configured with user-defined magnetic sensitivity, thresholds, and polarity; an active-high or active-low output option is also available for easy integration into electronic subsystems. These integrated circuits are AEC-Q100 Grade 0 rated and comply with ISO 26262:2011 ASIL A when properly applied, making them suitable for automotive and other safety systems. They can tolerate up to 40V and junction temperatures up to 165°C. Furthermore, they are internally protected against overvoltage, reverse battery, load rollover, output short circuits, human body ESD up to ±11kV, and other EMC conditions.
Typical applications include:
• Open/close/lock sensors for car doors, lids, trunks, LCD displays, interior lighting, etc.
• Elevators, pedals, and other driver controls/Human-Machine Interfaces (HMIs)
• Fluid level detection
• Tilt (bank angle), kickstand, and HMI sensors in 2- and 3-wheeled vehicles
• Household appliances/small appliances
• Intelligent motion, e.g., robotics, vending machines, exercise equipment, motorized blinds/curtains, etc.
Two package styles are available: Allegro's LH package is a low-profile, SOT-23W style package for surface-mount applications; The UA is an ultra-mini, 3-pin, through-hole, single-in-line package (SIP). Both packages are lead-free (Pb) with a 100% matte tin-lead coating.

More information or a quote