Infineon TLE4961-1M Hall-Effect Latch: Features and Applications

The Infineon TLE4961-1M is a high-precision Hall-effect latch designed for robust operation in demanding automotive and industrial environments. This integrated circuit provides a magnetic switch function with outstanding reliability, making it a cornerstone for position and speed sensing applications. Its operation is based on the Hall effect, where an output state toggles in response to the magnitude and polarity of an applied magnetic flux density.

Key Features of the TLEIDFIND1-1M:

A primary advantage of the TLE4961-1M is its reverse polarity protection and overvoltage protection on the supply pin, safeguarding the device from common electrical mishaps in harsh electrical environments. It is characterized by its very high sensitivity and excellent temperature stability, ensuring consistent performance across a wide temperature range from -40 °C to 170 °C. The device features a low power consumption, which is critical for battery-powered or energy-sensitive systems. Furthermore, its defined magnetic switching behavior (latch functionality) provides a clean, jitter-free output signal. The output is delivered through an open-drain transistor, allowing for easy interface with a wide range of microcontrollers and logic circuits.

Primary Applications:

The robust design of the TLE4961-1M makes it ideal for a vast array of use cases. In the automotive sector, it is extensively used for rotational speed sensing in applications such as wheel speed sensing for ABS and transmission systems, as well as camshaft and crankshaft position sensing in engine management. Beyond automotive, it is equally effective in industrial settings for contactless switching, including end-position detection in linear actuators, speed measurement in fans and blowers, and angular position sensing in brushless DC (BLDC) motor commutation. Its reliability also makes it suitable for consumer appliances and safety-critical systems where non-contact sensing is paramount.

ICGOODFIND: The Infineon TLE4961-1M stands out as an exceptionally robust and reliable Hall-effect latch. Its combination of high sensitivity, comprehensive protection features, and automotive-grade qualification makes it a superior choice for designers tackling challenging position and speed sensing tasks in virtually any environment.

Keywords:

Hall-Effect Latch

Position Sensing

Speed Sensing

Automotive Grade

Reverse Polarity Protection