MAX6865UK40D5S+T

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PMIC Supervisors are circuits which monitor and control the voltage and/or current of a system. This allows the supervisor circuits to make decisions and activate other circuits when the system is in or out of specification. The MAX6865UK40D5S+T is a PMIC supervisor of the MAX6865 series with a fixed delay to detect an out-of-specification condition. This application note explains the MAX6865UK40D5S+T application field, working principle and its related parameters.

Application Field

The MAX6865UK40D5S+T PMIC supervisor is typically used in applications such as digital power-line monitoring and overcurrent protection for Li-ion/ Li-pol batteries, as well as overcurrent and overvoltage protection for telecom and distributed power systems. Other power management applications, such as ATE power supply, computers and servers, include the MAX6865UK40D5S+T as one their parts. Some Automotive applications, such as lighting and in-car infotainment systems, also feature the MAX6865UK40D5S+T supervisor.

Working Principle

The MAX6865UK40D5S+T monitors power supply voltage and/or current, depending on the application. When it detects any out-of-specification conditions in the monitored voltage and/or current, the MAX6865UK40D5S+T signal the microcontroller or other system component of the anomalous situation. The MAX6865UK40D5S+T has a fixed delay of 8 ms for detecting the out-of-specification condition. The fixed delay time allows the MAX6865UK40D5S+T to store information about the out-of-specification condition in case the condition is reactivated soon after clearing it. This helps to avoid triggering false alarms.

Related Parameters

The related parameters of MAX6865UK40D5S+T are:

• Operating Range: 2.5V to 7V
• Input Voltage: 4.75V to VDD + 0.3V
• Reset Output: Push-pull/open-drain/discreet type
• Current Consumption: 6.5mA (max)
• Reverse Battery Protection: Integrated
• Operational Temperature Range: -40℃ to +85℃

The MAX6865UK40D5S+T also features diagnostic capabilities such as undervoltage, cycle-by-cycle current limit, overvoltage and overcurrent protection, overtemperature protection, power-off and power-on, and I/O short-circuit protection.

In addition, the MAX6865UK40D5S+T is also designed to provide a precise reset and monitoring of voltages. It has an on-chip, low drop out voltage regulator with a quiescent current of less than 2μA. This low quiescent current ensures minimal power dissipation, prolonging battery life. The MAX6865UK40D5S+T also has a wide input voltage range from 2.5V to 7V, which is suitable for various applications.

Conclusion

The MAX6865UK40D5S+T is a PMIC supervisor of the MAX6865 series with a fixed delay to detect an out-of-specification condition. It is mainly used for applications such as digital power-line monitoring, overcurrent and overvoltage protection, and others. Besides, it provides several related parameters such as operating range, input voltage and reset output. Furthermore, it also has several diagnostic capabilities such as undervoltage, cycle-by-cycle current limit and overtemperature protection. This application note provides some knowledge of MAX6865UK40D5S+T PMIC\'s application field, working principle and related parameters.

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