X4323S8I-4.5A

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A PMIC - Supervisors, X4323S8I-4.5A is an integrated circuit from a family of power management ICs developed by Maxim Integrated. It is a general-purpose supervisor for monitoring interrupt sources and providing a reset cycle. The chip is small in size, which makes it suitable for applications working in confined spaces.

The X4323S8I-4.5A contains four digital energy-powered devices: a reset supervisor, an ESD supervisor and two general-purpose digital inputs. Each functions as an independent digital sub-system with its own reset, open-drain reset output, fault mode and an input. The chip also features an integrated voltage monitor. This voltage monitor can be used to detect power supply voltage or temperature levels in applications.

The X4323S8I-4.5A is designed to provide protection against power supply transients and system resets. The device\'s reset supervisor monitors several voltage sources, including the system\'s main power, battery and aux supply, and initiates generation of a reset signal in case of an undervoltage condition. It also contains a built-in signal watchdog that performs a periodic “heartbeat” cycle, initiating a reset if overvoltage or undervoltage conditions are detected.

The ESD supervisor provides ESD protection for the system\'s ports, making it suitable for demanding industrial applications. It contains two solid-state devices connected to the system peripheral access ports, which detect electrostatic discharge events and latch the associated signal. The devices can be configured with different levels of diagnosis, allowing it to detect more severe events as well as silent discharges.

The general purpose digital inputs provide control of the reset supervisor, ESD supervisor and other features of the chip. They can be configured in different combinations to trigger different functions. For example, they can be used to trigger the reset supervisor to perform a system reset, or to generate a fault signal in case of an overvoltage or undervoltage condition.

The X4323S8I-4.5A is a versatile device, designed to simplify system design by providing maximum protection against power supply transients and ESD events. Its integrated voltage monitor can also be used to detect power supply levels, providing adjustable protection against out of range voltages. It is suitable for a wide range of applications, from low power embedded systems to industrial equipment.

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