Tessenderlo, Belgium, November 15, 2024 - Melexis, a global microelectronics engineering company, announced the launch of its ultra-low-power Hall effect switch chip, the MLX92235, which delivers a major breakthrough in automotive micropower applications with superior reliability and highly predictable output update rate tolerances for a The MLX92235 is a breakthrough in automotive micropower applications with excellent reliability and highly predictable output refresh rate tolerances, and can be used in a wide range of applications including door handles, electronic latches, sun visor controls, infotainment buttons, and brake light switches.

Figure. 1 MLX92235 Product Diagram

In modern vehicles, many systems rely on precise switch and latch mechanisms for immediate feedback. Given the number of switches widely distributed throughout the vehicle, it is critical to ensure their efficient operation and minimize power consumption, with every microwatt saved being significant. Melexis introduces the MLX92235 microwatt switch chip, which is available in four product model versions to meet these needs. This three-wire, monolithic magnetic switch chip ensures optimal performance throughout the vehicle's life cycle with industry-leading accuracy, superior consistency and reliability.

To minimize board space requirements, the MLX92235 is available in a standard automotive-grade TSOT23-3L package that does not require any external components. The switch maintains stable and reliable performance over a wide operating temperature range of -40°C to 105°C in the demanding vehicle environment. In addition, the chip's flexible input voltage, magnetic threshold selection, temperature coefficient, update rate and output options (push-pull or open-drain mode) make it easy to integrate into a variety of vehicle systems.

The MLX92235 features an advanced power design with integrated auto-sleep/wake-up logic and typical sleep current consumption of only 0.65μA at 1.8V. It also supports selectable sleep time settings from 0.6ms to 800ms.

As a highly sensitive Hall sensor chip with chopper stabilization, the MLX92235 is capable of providing accurate and non-contact feedback in a wide range of magnetically-enabled applications, including unipolar/all-pole switch or latch configurations. With its versatility, compact size and efficient performance, the MLX92235 will enable outstanding designs for automotive engineers. Its feedback mechanism can also further facilitate the development of smart vehicle features, such as automatically triggering the lighting of interior ambient lighting when a door or sun visor is opened, enhancing the intelligence and ambience of the driving experience.

Figure. 2 MLX92235 Application Scenario Diagram

Minko Daskalov, Product Line Manager at Melexis, commented, “The new MLX92235 from Melexis demonstrates excellent low-power performance in the field of non-contact Hall-effect sensors, while at the same time ensures the reliability and accuracy of the sensors to fully replace traditional mechanical switches in automobiles. This innovation will help automotive engineers to realize intelligent upgrades for all kinds of automotive switch and latch functions, thus bringing end users a more convenient and efficient driving experience.”

About Melexis Corporation

Melexis is committed to designing, developing and delivering cutting-edge sensing and drive solutions that put people first and care for the planet. Our mission is to help engineers turn their ideas into real-world applications and co-create a safe, comfortable, and sustainable future where visions become tangible realities.

They specialize in the automotive market, providing microelectronic solutions for a wide range of applications in technologies such as powertrain, thermal management, lighting, e-brake, e-steering and battery. At the same time, they are leading the way in innovation by actively exploring emerging markets such as sustainable world, alternative mobility, robotics and digital health.

Since its founding in Belgium in 1989, Melexis has grown into a multinational company with more than 2,000 employees in 12 countries around the world, providing cutting-edge technical support to its customers.