X5043S8Z

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PMIC-Supervisors are an important class of voltage regulators, designed to detect and act on sudden changes in voltage and temperature in circuits. They are also used to ensure proper circuit operation in the face of transient conditions and to protect against overloads. The X5043S8Z is a voltage supervisor that combines a window comparator with two integrated circuits (ICs): an adjustable fault latch and a watchdog timer. It has wide operating range, which extends to 8.0V, making it suitable for a variety of circuits.

The X5043S8Z has two main operating modes. The first mode is the voltage window detection, which is used to monitor a certain voltage range and detect if the voltage is outside the preset range. It has a selectable threshold voltage range between 2.275V and 7.775V. The window comparator is able to detect a voltage exceeding the upper or lower thresholds with a typical accuracy of +/- 100mV. It then signals an alert to the host reset controller.

The X5043S8Z also has an adjustable fault latch that can detect if there is a persistent fault in the power supply. Similarly to the voltage window detection, it monitors the supply voltage. When the supply voltage is outside the pre-set failure limits for a given time, the fault latch will trigger a power-off signal. The fail timeout can be set by adjusting the internal capacitor.

The X5043S8Z also offers an integrated circuit watchdog timer. This protects against system lockups, issuing an alert if the host processor fails to reset it within a given time. The watchdog timer starts when reset by the host, and if not reset within the allotted time period it will assert a reset or power off as determined by its state configuration. The watchdog timeout can also be set with an internal capacitor.

In addition to the voltage supervisors, the X5043S8Z provides several other features. It has an integrated over-current protection, a power-on reset, easy bus programming, and low power consumption. It is also highly configurable, with selectable thresholds, fail timeouts, and reset signals.

The X5043S8Z is designed to fit a wide range of applications, from embedded automotive and industrial systems to consumer electronics. As a voltage supervisor, it provides protection from power faults, and its adjustable fault latch and watchdog timer ensure continued reliable operation. It is well suited for a variety of circuits, especially those requiring high accuracy, wide range, and low power consumption.

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