S-1003CA17I-I6T1U

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Power management integrated circuits, or PMICs, are components that distribute and monitor the flow of power in a variety of electrical and electronic systems. Supervisors, a subcategory of PMICs, are semiconductor devices specifically designed to provide an additional layer of protection against excessive current and certain fault conditions. This article provides an overview of the application field and working principle of a S-1003CA17I-I6T1U supervisor integrated circuit.

Applications

The S-1003CA17I-I6T1U is a voltage monitor supervisor that is best suited for embedded controllers and power management applications. It is an ideal solution for providing overvoltage, undervoltage and over current protection for devices such as microcontrollers, DSPs, ASICs, and FPGAs. This supervisor is designed with open drain outputs to allow a maximum of 16 independent outputs without the need for additional buffers.

In addition to its primary function as a voltage monitoring device, the S-1003CA17I-I6T1U also features a wide temperature range from -40 to +125 degrees Celsius, a low quiescent current of 0.1 uA, and a wide operating voltage range from 1.8 to 5.5 volts. These features make the S-1003CA17I-I6T1U suitable for applications in the automotive, industrial, medical and consumer markets.

Working Principle

The S-1003CA17I-I6T1U utilizes a hysteresis voltage loop to monitor and maintain accurate power supply levels. This hysteresis loop is activated when the voltage drops below a given threshold, typically in the range of 1.8 to 5.5 volts. Once the voltage drops below the threshold, an open drain RESET output is asserted. It will remain in this asserted state until the voltage rises above the threshold again. The S-1003CA17I-I6T1U also features a watchdog timer which can be programmed to a range of 1.5 ms to 512 ms. This watchdog timer triggers a reset signal if the system fails to send an active signal within the programmed time period.

In addition to the hysteresis voltage loop and watchdog timer, the S-1003CA17I-I6T1U also provides a small number of general purpose I/Os that can be used to monitor and control other circuitry in the system such as motor drivers or power switches. The I/Os can be programmed to have an active logic high pull up/down resistor allowing for additional levels of redundancy for critical tasks.

Overall, the S-1003CA17I-I6T1U is an ideal solution for embedded controllers and power management applications. It features a wide operating voltage range, low quiescent current, and wide temperature range, making it suitable for automotive, industrial, medical and consumer markets. The combination of its hysteresis voltage loop, watchdog timer, and programmable I/O make it a robust and reliable solution for power management and overvoltage protection.

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