MAX804TCPA+

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Power management integrated circuits (PMICs) are designed to simplify and reduce the number of integrated circuits needed to power a given device. PMICs are used to convert a source of raw power, like an alternating current (AC) outlet or a battery, into a form that is useable by the device. By consolidating multiple regulating and protecting functions into one chip, PMICs improve the reliability and cost efficiency of power management design. PMICs offer a wide range of customizable features, with different levels of integration depending on the application.

Supervisors are a type of PMICs which monitor system power, set thresholds, identify faults and provide protection from those faults. Supervisors are designed to detect and respond to particular external conditions, and will take action when those conditions are met. Supervisors are typically used to monitor system voltages, resetting and powering on a circuit. In order to be able to do this, supervisors are typically equipped with one or more analog comparators and an output transistor or buffer to drive an external circuit.

The MAX804TCPA+ is a supervisor PMIC which combines both reset and monitor functions in a single power IC. Pin-out compatible with both MAX800TP and MAX804P offers an adjustable threshold that is set with a single capacitor while the reset output can be set to either be active-high or active-low. It also provides reverse drain protection and reverse battery alerts, allowing designers to easily monitor and protect their design from power faults.

The working principle of the MAX804TCPA+ is simple. An internal comparator monitors a level that is determined by the ratio of two external resistors, once the ratio exceeds a certain voltage the reset will be activated. The output signal is generated by a buffered output transistor that can be set to either active-low or active-high. If the Vcc supply voltage drops below the threshold, the signal will be sent to the reset input of the target system and the signal will cause the system to reset.

The MAX804TCPA+ is suitable for a variety of applications ranging from mobile devices, microcontrollers, and industrial equipment. It is capable of detecting a wide range of fault conditions such as reverse battery, reverse drain, and low power supplies. The wide range of operating temperature ensures that the MAX804TCPA+ will operate reliably in most environmental conditions.

In summary, the MAX804TCPA+ is a low-power and cost-effective supervisor PMIC with multiple features. It features adjustable thresholds and a wide temperature range. It is also capable of monitoring and protecting against faults such as reverse battery, reverse drain, and low power supplies. The MAX804TCPA+ is an ideal choice for designers who are looking for an effortless and unified power management solution.

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