STM6779LWB6F Integrated Circuits (ICs)

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The STM6779LWB6F is a PMIC (Power Management Integrated Circuit) in the Supervisors product group from STMicroelectronics. It is a multi-voltage supervisor that provides voltage supervision and reset/power-OK signals. The STM6779LWB6F monitor power supplies for microprocessors and digital circuits, providing detection of short-term under-voltage and over-voltage faults, as well as longer term supply degradation.

This PMIC supervisor has several main applications, the most prominent of which are embedded systems that require precise power management to avoid damage to their circuits. STM6779LWB6F is particularly suitable for applications in which a large number of supply voltages need to be monitored and supervised. Such applications could include data centers, network systems, servers, media platforms, consumer electronics and home appliances.

Secondary applications include power backup units, such as UPSs (Uninterruptible Power Supplies); industrial and office automation systems; professional audio and near field communication networks; portable medical devices; and automotive and communications infrastructure.

The STM6779LWB6F provides several advantages, such as advanced control for system power management, advanced reset management, and is suitable for a variety of supplies and system components. Additionally, the PMIC supervisor is fault-tolerant, being able to detect short-term out-of-tolerance conditions, and to provide reset/power-OK signals to the system controller, in order to avoid system crashes.

The STM6779LWB6F works by monitoring the supply voltages and providing a reset signal (RST#) and power-OK signal (POK#) when the supply voltage is within spec. The RST# and POK# signals will be asserted or deasserted to indicate when the supply voltage is valid or invalid. If a valid supply voltage is not detected, the supervisor will hold the RST# signal low until the voltage becomes valid. This can be used by software to identify when a supply voltage is out of tolerance.

The STM6779LWB6F can be configured with different voltage thresholds and reset delays, depending on the application requirements. The supervisor can be powered from either the input supply or an auxiliary supply, which allows for reliable operation even when the supply voltage is at its minimum detection threshold. Additionally, it includes status outputs for monitoring voltage levels and fault indications. This makes it ideal for applications that require monitoring of multiple system voltages in order to ensure reliability and stability.

Overall, the STM6779LWB6F is a very useful tool for systems that require advanced power management. It offers high accuracy, fault-tolerance and advanced features, making it a great choice for applications in embedded systems and industrial automation.

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