L9651

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The L9651 Device is a member of STMicroelectronics Power Distribution Switches, Load Drivers family, and is used to provide essential functions in today\'s power distribution designs.

The L9651 is an advanced High-side Power Distribution Switch, specially designed for automotive applications. It includes three low-side NMOS switches, and five additional NMOS power switches which can be connected with external fet drivers, allowing for direct control of an automotive battery using a logic input. The L9651 is protected against load dump, over-temperature, over-voltage, under-voltage and reverse battery conditions.

The L9651 combines a wide input voltage range from 4V to 42V with several features, including smart power distribution and active current-sensor technology. With two sensing strategies, the L9651 is capable of monitoring voltage levels and deciding whether to turn on or turn off a specific load according to the input voltage level. This allows for dynamic power switching, making the L9651 ideal for high-performance automotive applications.

Moreover, the L9651 integrates many protection functions, including over-temperature, over-voltage, under-voltage and reverse battery protections. This makes the device suitable for operating in harsh environmental conditions and eliminates the need for external protection components, minimizing cost and space requirements.

At its core, the L9651 employs a flexible architecture to allow for adjustable pre-charge currents, slope compensation and slew-rate control. These features help to reduce switching noise and EMI, making the device ideal for use in audio applications that require low EMI levels and low noise.

The L9651 is designed to be used in power-supply systems, automotive entertainment systems, weather stations and industrial automation systems. It is offered in a lead-free, thermally enhanced TSSOP-38 package, providing an integrated and cost-effective solution.

In summary, the STMicroelectronics L9651 device is an advanced, low-emission high-side power distribution switch. With its wide input voltage range and wide range of protection features, it is the ideal choice for automotive applications. The device\'s low-noise operation, low-EMI levels, multiple sensing strategies and current sensing technology make it ideal for powering audio applications, and its integrated protection features save cost and space requirements.

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