DS1236AS-5N

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Supervisors are one of the most important components in system designs with microcontrollers. They help users ensure that applications are working properly and are protected from errors and faults. Today, supervisors are no longer a traditional “watchdog” but have evolved into powerful protection devices with a range of features and capabilities. One of these is the DS1236AS-5N supervisor, which is an active voltage and temperature supervisor made by Maxim Integrated.

The DS1236AS-5N is a supervisor that can be used in a variety of applications including embedded microcontroller applications, power supplies and adjustable power systems. It provides an active monitoring and controlling system that can detect voltage drops and temperature surges. This supervisor also provides an advanced feature known as the Reset windows facility, which allows the supervisor to detect the presence of system reset conditions and automatically act to reset the system.

The DS1236AS-5N is designed to be used in industrial and commercial applications that require safety and reliability. It is rated for a maximum operating temperature of +85 °C and a maximum voltage of 27V. Additionally, it can withstand a maximum transient input voltage of 50V. It features a low voltage-detect circuit with a supply current of 2.0mA and a reset circuit with a supply current of 10mA. The reset time is approximately 20ms from the initial voltage-detect threshold to system reset.

The working principle of the DS1236AS-5N is relatively straightforward. It is designed to monitor the system voltage and temperature levels, and take action if one of these parameters is too low. For voltage monitoring, it uses an internal voltage reference to compare the system voltage with a predetermined threshold. If the system voltage drops below the threshold, the supervisor will trigger a reset. Similarly, it uses an internal temperature sensor to detect if the operating temperature is too high, and triggers a reset if it is.

The DS1236AS-5N also features an integrated Automatic Power-On Reset (APOR) circuit which ensures proper system initialization during power-on. This feature makes it easier to implement reliable system startup, since the APOR circuit provides an immediate low active reset when the system voltage reaches a set threshold. The active low reset is held until the system is ready to start operating. This can help prevent system crashes due to unsuccessful initialization.

In summary, the DS1236AS-5N is a robust active voltage and temperature supervisor made by Maxim Integrated. It provides an advanced protection system for microcontroller applications with its reset windows and APOR circuits. This supervisor is designed for safety, reliability, and efficiency, making it a great choice for industrial and commercial applications.

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