MAX6364LUT44-T

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A power management integrated circuit (PMIC) is a device that includes various voltage regulators and overvoltage protection circuits to provide power distribution and protection for integrated circuits. Amongst these PMICs, Supervisors are short-circuit protection/overvoltage detectors with integrated delays that control any type of actuator and are used in power distribution systems. MAX6364LUT44-T is one such device and its application field and working principle will be discussed in this paper.

Application Field

The MAX6364LUT44-T is a dual input, push-pull active-low power supervisor circuit designed to monitor up to two voltage rails. It is designed to prevent damage caused by system power supply shorts, overvoltage and power supply faults. For these reasons, the MAX6364LUT44-T is frequently used in industrial, automotive and consumer applications.

Typical applications of the MAX6364LUT44-T include but are not limited to Li-Ion battery manager circuits, automotive body control modules, overvoltage protection in distributed power systems and communications equipment. Additionally, the push-pull cofiguration offers flexibility for discrete overvoltage protection and control devices such as relays and solenoids.

Working Principle

The MAX6364LUT44-T includes two digital inputs and two push-pull outputs. When either of the digital inputs detect a high voltage, the outputs become logic low. This triggers a delay before either output is activated. The delay time can be adjusted with the help of an external resistor connected to the CHRG Pin and is typically around 0.5s. The delay time can be reduced or increased depending on the application.

The output drivers are capable of sinking up to 600mA and are available in push-pull and open-drain configurations. Additionally, the MAX6364LUT44-T includes an on-chip voltage detector with adjustable thresholds, overvoltage protection and reverse-battery protection. There is also an undervoltage lockout (UVLO) feature to detect when the supply voltage is too low to provide proper operation.

The MAX6364LUT44-T has an extremely low supply current of 30μA and is available in a wide temperature range, making it suitable for automotive and industrial applications. It is available in an 8-pin thin SO8W package and has an operating temperature range of -40°C to +125°C.

Conclusion

The MAX6364LUT44-T is a dual input, push-pull active-low power supervisor circuit designed for use in industrial, automotive and consumer applications. It provides protection against system power supply shorts, overvoltage and power supply faults. The device includes two digital inputs and two outputs, along with adjustable delay time and current sinking capabilities. It is available in an 8-pin thin SO8W package with an operating temperature range of -40°C to +125°C and low supply current of 30μA.

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