TLE49642MXTSA1

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The TLE49642MXTSA1 is a magnetic switch designed and manufactured by Infineon Technologies AG. This technology falls under the category of Magnetic Sensors & Switches (Solid State). These types of sensors detect a change in magnetic flux, in order to activate a switch, or indicate in some manner a change in magnetic field.

The TLE49642MXTSA1 is designed to detect a change in magnetic field and convert it into a signal suitable for application such as controlling a switch, enabling usage in lower cost, space-saving consumer applications. It functions using a Hall effect, which is a phenomenon where a voltage is generated when a magnetic field passes through a conductor. The TLE49642MXTSA1 is a low power Hall effect switch IC, powered via the supply voltage of 2.5 Volts to 5.5 Volts. The system also includes a differential amplifier and comparator to recognize an external field. The device consumes a very low quiescent current of 41.5µA, and is available in SOIC-8, DFN, or SSO-8 packages.

The TLE49642MXTSA1 provides four operating modes: Basic Switching, High Level Logic, Low Level Logic and Hysteretic Mode, allowing users to customize the switching behavior according to the application. In Basic Switching mode, the device acts as a simple high side or low side switch, with an operating frequency range between 17 kHz and 500 kHz. In High Level Logic mode, a pull-up transistor blocks the sink current, and when a magnetic field is applied, the output turns from low to high. This logic level converts the analog Hall signal output into a digital logic output. For Low Level Logic mode, the pull-up transistor is blocked when a magnetic field is applied, and the output turns low. Hysteretic Mode variant offers good noise immunity and good thermal stability, as it keeps the output state when the magnetic field has passed. This allows the switch to behave as a latch.

The TLE49642MXTSA1 is extensively used in automotive, consumer and industrial applications. Automotive applications include rail switching, window and sunroof control, and alarm systems. In consumer and industrial applications, it is used in alarm systems, flow meters, door sensors, and actuators.

The TLE49642MXTSA1 possesses excellent thermal, chemical, electrical, and mechanical durability, making it extremely reliable. It uses a temperature range between -40°C and +125°C, providing long-term thermal stability for applications that require reliable switch operation over extended temperature ranges. The device is extremely tolerant to noise, as it has 2 distinct Hall cell thresholds, and a wide hysteresis parameter. This provides excellent noise immunity for sensor applications. The TLE49642MXTSA1 also has immunity to Contact Bounce (switch bouncing) and has an integrated Reverse Polarity protection feature, making it suitable for harsh electrical environments.

Overall, the TLE49642MXTSA1 is an advanced magnetic switch IC that is suitable for a wide range of applications in the automotive, consumer and industrial markets. It has excellent electrical, thermal and mechanical characteristics, making it extremely reliable and providing it with extreme protection against electrical disturbances.

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