The ATS647LSHTN-T is a high-sensitivity Hall-effect latch designed and manufactured by Allegro MicroSystems, LLC. This sensor is engineered for applications requiring precise detection of magnetic fields. Its latching behavior retains the output state even after the magnetic field is removed, making it suitable for position and speed sensing in demanding environments.

Applications

• Brushless DC (BLDC) motor commutation: Accurately detects rotor position for efficient motor control.
• Speed sensing: Provides precise speed information in automotive and industrial applications.
• Position sensing: Detects the position of moving parts in various systems.
• Flow meters: Senses the rotation of impellers to measure fluid flow.
• Door and lid detection: Detects the open or closed state of doors and lids in appliances and security systems.

Features

• High sensitivity: Detects weak magnetic fields, enabling operation with small magnets or large air gaps.
• Latching operation: Output state is retained even after the magnetic field is removed.
• Reverse battery protection: Protects the device from damage due to incorrect power supply polarity.
• Solid-state reliability: Provides robust and reliable performance in demanding environments.
• Small SOT23W package: Compact package for space-constrained applications.
• Wide operating voltage range: Operates over a wide range of supply voltages.
• Temperature stability: Provides stable performance over a wide temperature range.

Benefits

• Precise position and speed sensing: High sensitivity and latching operation enable accurate detection of magnetic fields.
• Reliable performance: Solid-state design and reverse battery protection ensure robust and dependable operation.
• Easy integration: Small package and wide operating voltage range simplify integration into various systems.
• Reduced system cost: High sensitivity allows for the use of smaller magnets, reducing overall system cost.
• Improved efficiency: Accurate motor commutation improves motor efficiency.

Additional Details

The ATS647LSHTN-T operates with a supply voltage range of 3 V to 24 V. It has a typical operate point of 25 G and a typical release point of -25 G. The device is available in a SOT23W package and is RoHS compliant. This Hall-effect latch provides a cost-effective and reliable solution for various sensing applications.