MAX6465UR23+T

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The MAX6465UR23+T integrated circuit is a low-cost, low-power supervisor for microprocessors (MPUs) - providing accurate monitoring of power resources, and supervising resets and system initialization. Built around advanced BCD technology and primarily intended for use in portable and battery-powered electronics, the IC is a comprehensive and versatile solution for advanced system protection and power management requirements.

The IC is designed to provide advanced and efficient monitoring of power resources such as DC/DC converters, battery power, and supplies for all kinds of voltage levels. It features an on-chip voltage regulator that powers an internal core, allowing proper monitoring operations even when the input voltage supply is weak. Other device functions include a low-power¬detection circuit to inform the microprocessor when voltage levels drop below a certain threshold, and an integrated prescale timer with an on-chip oscillator and reset pulse width control.

An internal analog comparator can be used to detect power-up and power-down events, and is designed to drive active-high or active-low reset outputs. An integrated reset timer can be used to extend the reset signal for a predetermined period, after which the reset output automatically returns to the active-high state. This feature provides added protection against spurious power-on reset events.

The device also includes an integrated reset stay circuit which is triggered when a low-power detection event occurs. The circuit can be used to generate a reset signal that remains active even after the voltage level has risen above the low-power detection threshold, ensuring reliable operation during sustained low-power events.

In order to interface with an MPU, the device includes an Ethernet port which provides an 8-bit GPIO interface. This port can be used to monitor the status and control the operating modes of the IC, as well as to detect faults and power anomalies. Additionally, the IC features an integrated watchdog timer which is used to monitor the functionality of the system, and can trigger software or hardware resets if the MPU stops functioning correctly.

The IC is designed to draw a very low quiescent current of 18µA, ensuring long life for battery-powered systems. Furthermore, it is available in a range of package types, offering both a wide selection of features as well as flexibility in terms of space requirements. This makes the MAX6465UR23+T a great choice for applications such as communications infrastructure and portable medical electronics.

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