MAX6372KA-T

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Power management integrated circuits (PMICs) are devices that consolidate some of the most basic functions required to support a power management system. These functions include voltage monitoring, sequencing, sequencing and tracking, power conversion, timing and reset. PMICs can provide many benefits for power management systems, including low cost, decreased circuit complexity and reduced board space requirements.

Supervisors, another category of PMICs, are used to provide robust system reset and always-on supervision capability. They are often used in microcontroller and microprocessor power management systems. Supervisors are also used in high-reliability systems where shock and vibration are concerns, as well as systems that operate in the presence of high electromagnetic interference or with many transient power fluctuations. Supervision and reset functions on these systems is critical for proper operation.

The MAX6372KA-T is an ultra-low-power supervisor with an active-low RESET output and adjustable reset thresholds. It features a microprocessor reset (POR) circuit, an active-low push-pull reset output, a window watchdog reset and two manual reset pins. An on-chip RC oscillator provides reset timeout and the reset threshold is trimmed using a single external resistor.

The MAX6372KA-T is designed to monitor the power-supply voltage of microcontrollers and microprocessors, and is suitable for powering lower-and mid-voltage systems. It helps ensure that the system remains in a known state by asserting a reset if the system is unable to remain in a valid operation state. The MAX6372KA-T can be used for manual and/or automated reset, and provides a watchdog timer for system health monitoring.

The MAX6372KA-T is easy to use and provides a highly accurate reset threshold, flexible reset pulse duration and a wide reset timeout range. It provides superior power-supply monitoring accuracy, low power consumption and low start-up current.

The application of the MAX6372KA-T can be seen in a range of systems, such as embedded microprocessors and digital appliances. Its low power operation and accurate reset threshold make it particularly useful in portable and battery-powered devices. Systems that need a reliable reset system, such as medical devices, can also benefit from the features of the MAX6372KA-T.

The MAX6372KA-T works by sensing changes in the input voltage. When this voltage is below the reset threshold, the reset output is asserted. The reset output is cleared when the input voltage is greater than the reset threshold. The reset threshold, reset timeout and reset pulse duration can be adjusted by setting a single external resistor.

The watchdog timer will be activated if the input voltage remains below the reset threshold for longer than the programmed timeout period. The timer is reset when the input voltage returns above the reset threshold. The manual reset active-low input can be used to directly reset the watchdog timer.

In summary, the MAX6372KA-T is a highly integrated, low-power supervisor IC that provides a reset and watchdog timer for microcontrollers and microprocessors. Its adjustable reset and timeout thresholds, low power consumption and low start-up current make it suitable for a variety of applications, and it is especially useful in portable and battery-powered applications.

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