The A3280KLHLT-T is a highly sensitive, two-wire, unipolar Hall-effect switch designed for use in automotive and industrial applications. This switch is produced by Allegro MicroSystems, known for their reliable and robust sensing solutions. It integrates Hall-effect sensing technology with advanced temperature compensation to deliver consistent performance across a wide operating temperature range.

Applications:

• Brushless DC (BLDC) motor commutation.
• Position sensing in automotive systems (e.g., seat position, pedal position).
• Speed sensing in industrial equipment.
• Proximity detection in white goods and consumer electronics.
• Door and lid closure detection.

Features:

• High Sensitivity: Provides reliable switching with low magnetic field strength.
• Unipolar Switch: Operates with a single magnetic pole.
• Two-Wire Interface: Simplifies wiring and reduces system cost.
• Temperature Compensation: Ensures stable operation over a wide temperature range.
• Robust Design: Suitable for demanding automotive and industrial environments.
• Small Size: Allows for integration into compact systems.
• Reverse Battery Protection: Protects the device from damage due to incorrect power supply polarity.

Benefits:

• Improved System Reliability: Consistent switching performance enhances the reliability of the overall system.
• Simplified Design: The two-wire interface reduces wiring complexity and cost.
• Versatile Applications: Suitable for a wide range of automotive and industrial applications.
• Cost-Effective Solution: Provides a high-performance sensing solution at a competitive price.
• Enhanced Performance: Temperature compensation ensures stable operation under varying environmental conditions.

Additional Details:

The A3280KLHLT-T operates on a supply voltage range typically between 3 V to 24 V. It has a typical operate point (Bop) of 35 Gauss and a release point (Brp) of 10 Gauss. The output is an open-collector output. The device includes built-in protection features such as reverse battery protection and overvoltage protection. The device is commonly packaged in a small SOT23W package, making it suitable for space-constrained applications. The device is RoHS compliant and adheres to automotive industry standards for reliability and performance.