APX803L20-36SA-7

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APX803L20-36SA-7 is a type of Supervisors, which is a popular category of Power Management Integrated Circuit (PMIC). Supervisors are designed to provide proactive monitoring and protection of critical power supply assets against unexpected occurring conditions. These conditions can range from supply voltage fluctuations, over-currents, hot-swap applications and low power supply warnings.In general, the Supervisor chips are divided into two major categories: voltage and current supervisors. The voltage supervisors are mainly used for monitoring of power supply lines, to detect whether the voltages of these power lines are within the acceptable range. On the other hand, current supervisors monitor the current flow throughout the power supply lines, to ensure that the current is not too high or too low.APX803L20-36SA-7 belongs to the voltage supervisor category. It is a high-performance triple voltage supervisor integrated circuit, which provides high accuracy monitoring of multiple power rail voltages. It incorporates a built-in voltage reference and a voltage detector, to deliver precise voltage monitoring and regulation. The APX803L20-36SA-7 also features electrically programmable over-voltage, under-voltage, and over-temperature trip points. This makes it ideal for applications such as power supply monitoring, power management, hot-swap guardian in computer peripheral devices, and data protection management.The APX803L20-36SA-7 provides single chip with three independent and identical voltage supervisors, with independently programmable fault output. Each voltage supervisor has an adjustable over-voltage, under-voltage and over-temperature trip point setting, which can be programmed over an external I2C communications interface. The over-voltage reset and under-voltage watchdog can be used together to provide multiple levels of protection from over-current and/or over-voltage condition in the system. The over-temperature protection trip point is also programmable via external I2C interface.In terms of its working principle, the APX803L20-36SA-7 operates by comparing the reference voltage and the monitored voltage input, to detect any out-of-tolerance conditions. A threshold voltage will be created by the reference voltage of the device. When the voltage input reaches or exceeds the reference plus the threshold voltage, an alarm signal will be generated. The alarm signal will then trigger the appropriate reset or warning outputs, depending on the status of the controlled voltage.In conclusion, APX803L20-36SA-7 is an advanced voltage supervisor IC, ideal for multiple power rail protection, power supply monitoring and hot-swap guardian applications. It offers precise voltage monitoring and regulation with adjustable over-voltage, under-voltage and over-temperature trip points. Its built-in voltage reference and voltage detector deliver high accuracy and reliable performance.

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