CAX809MTBI-T3

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Power management integrated circuits (PMIC) are an indispensable component of modern electronics. As their name suggests, PMICs provide control logic and power regulation functions that help regulate power within a system. PMICs are commonly divided into three categories: voltage regulators (VRs), power isolators and supervisors (SPSs). Supervisors are specialized PMICs that are used for the purpose of fault detection and system reset. CAX809MTBI-T3 is an example of a supervisor. In this article, we will explore the application field and working principle of the CAX809MTBI-T3 supervisor.

CAX809MTBI-T3 is a pin-strapped supervisor designed to provide a reset signal in response to an overvoltage condition. It is typically used in critical applications such as medical devices and industrial control systems where system reset is required in the event of a power failure, overvoltage or overcurrent event. The supervisor provides 1.21V to 1.44V of supply voltage and adjustable time delay (1ms to 25ms) to reset the system if an overvoltage condition is detected. The output signal can be used to control other integrated circuits, power supplies or even other devices.

The CAX809MTBI-T3 supervisor consists of an integrated voltage-sensing circuit, voltage comparator and an overvoltage comparator that switches the reset signal. It has an active-low input pin, two enable pins and two reset output pins. The enable pins control the monitoring of the supplies voltage. The active-low pin allows an external pull-up to keep the supervisor disabled until the voltage reaches a specific threshold. The two reset output pins can be used to provide reset signals to different integrated circuits in order to minimize the power up sequence and reduce the overall reset time. The supervisor also includes an integrated thermal shutdown circuit to monitor the junction temperature and activate the reset signal if necessary.

The CAX809MTBI-T3 supervisor can be used in a variety of applications. Its low input voltage and high reset time capabilities make it suitable for medical and industrial control systems. Its adjustable time delay makes it suitable for systems where a reset may be required rapidly or slowly. In addition, its integrated thermal shutdown circuit allows the supervisor to protect the system from thermal events that may cause an overvoltage or overcurrent condition. This is particularly useful for applications that operate in extreme temperatures or in potentially hazardous environments.

In summary, the CAX809MTBI-T3 supervisor is a versatile solution for detecting and responding to overvoltage conditions. Its adjustable time delay and integrated thermal shutdown circuit make it suitable for use in a variety of applications. By providing a reset signal in the event of an overvoltage condition, the CAX809MTBI-T3 supervisor can help protect critical electronics from damage caused by power failure or overcurrent events.

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