MAX6865UK25D6S+T

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Introduction

The MAX6865UK25D6S+T (hereafter referred to as MAX) is a low dropout voltage supervisor with multi-voltage, low quiescent current, and integrated precision bandgap reference. It is designed specifically to be used with power systems, motor controllers and building automation controllers with integrated microcontrollers. The MAX is suitable for any application that requires a precise voltage and current monitoring feature.

Application Field

The MAX is an appropriate choice for applications where accuracy and reliability are required. The MAX features a wide range of voltage protection settings which can be fine-tuned for different applications. For example, it can be used in power systems with varying voltages (i.e. from 4V to 5 V) without the need for external components. Furthermore, it can detect sudden changes in the input voltage or the current flowing through the application.

Moreover, the MAX is perfect for motor control applications, as it can detect motor overcurrent and motor stall fault conditions, enabling effective and reliable closed-loop protection. The MAX is also suitable for other embedded applications, such as medical instrumentation, industrial and consumer electronics devices, and home appliances.

Working Principle

The MAX works on an adjusted voltage with precision reference. In order to detect faults, the MAX has two voltage comparators, one of which is capable of checking the normal operation of the system while the other looks for an over-voltage or under-voltage condition. If any of the comparators finds a fault, the MAX will activate a reset output, which then minimizes further damage.

The MAX uses an adjustable threshold voltage for both under and over voltage detection. By default, the threshold voltage is set at 2.4V, but it can be adjusted with external components for applications with different input voltages. It also has an adjustable power-on delay time, which allows the system to remain off until it is adequately powered.

The MAX also includes a precision bandgap reference, allowing it to measure small changes in the input voltage. It further has a low quiescent current, making it ideal for power saving applications. Additionally, the MAX can operate in two modes: auto reset mode or manual reset mode.

Conclusion

The MAX6865UK25D6S+T is a low dropout voltage supervisor with integrated precision bandgap reference, suitable for power systems with varying voltages and motor controllers. It has two voltage comparators that detect any fault and has an adjustable power-on delay time. This MAX also has a precision bandgap reference and a low quiescent current, making it a suitable solution for power saving applications.

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