3175 Datasheet (Allegro MicroSystems)

3175, HALL-EFFECT LATCHES

3175 AND 3177 HALL-EFFECT LATCHES These Hall-effect latches are temperature-stable and stress-resistant sensors especially suited for electronic commutation in brushless dc motors using multipole ring magnets.

Each device includes a voltage regulator, quadratic Hall voltage generator, temperature compensation circuit, signal amplifier, Schmitt trigger, and an open-collector output on a single silicon chip.

The on-board regulator permits operation with supply voltages of 4.5 volts to 18 volts.

3175 Features

* I Symmetrical Response I 4.5 V to 18 V Operation I Open-Collector Output I Reverse Battery Protection I Activate With Small, Commercially Available Permanent Magnets I Solid-State Reliability I Small Size I Superior Temperature Stability I Resistant to Physical Stress Dwg. PH-003A Pinning is shown