DS1819AR-20/T&R

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PMIC - Supervisors include power management integrated circuits optimized for reset/power sequencing, supervision, and reset timer functions. The DS1819AR-20/T&R is a very common power management system ideal for a wide array of applications. It allows the user to monitor system voltage and provides chip reset when the voltage falls out of range. This article will discuss the DS1819AR-20/T&R application fields and working principle.

Application Fields

Due to its high precision and wide range of features, the DS1819AR-20/T&R is ideal for a variety of application fields, such as industrial automation and control, medical, telecommunications, and consumer electronics. Its fast response time and adjustable threshold levels make it ideal for applications where precise voltage monitoring is needed. In industrial applications, the DS1819AR-20/T&R is capable of monitoring the voltage of multiple power supplies and providing chip reset when the voltage falls out of range.

In medical applications, the DS1819AR-20/T&R is used to monitor the supply voltage of medical equipment such as patient monitors and infusion pumps. It is responsible for providing chip reset in the event of an overflow or overvoltage, preventing damage to the medical equipment. It is also used in telecommunications, where it is employed to provide voltage monitoring and reset for communication nodes. The DS1819AR-20/T&R is also used in consumer electronics such as refrigerators, ovens, and microwave ovens. It is responsible for monitoring the voltage of the appliance and resetting the chip in the event of an overflow.

Working Principle

The DS1819AR-20/T&R consists of a monitoring circuit and reset circuit. The monitoring circuit consists of several resistors, diodes, and an operational amplifier. The resistors are connected in series to create a voltage divider, which is used to measure the system voltage. The voltage is measured against a reference voltage set by a set of resistor values ranging from 1.5K ohm to 10K ohm. If the system voltage falls below the reference voltage, the amplifier will produce an error signal, which is then fed to the reset circuit. The reset circuit consists of a transistor and a reset timer. The transistor is activated in the event of an error signal, and will either reset the chip or provide chip reset. The reset timer allows the user to set how much time is allowed before the reset is activated.

The DS1819AR-20/T&R can also be used in combination with other components to create a supervised power supply. When used in this way, the DS1819AR-20/T&R is responsible for providing chip reset upon system failure or voltage outages. The DS1819AR-20/T&R can also be used to power down devices in the event of a power fault.

In summary, the DS1819AR-20/T&R is an ideal power management system for a wide variety of applications. It is capable of monitoring system voltage, providing chip reset when the voltage falls out of range, and providing chip reset upon system failure or voltage outages. Its adjustable threshold levels and fast response time make it ideal for applications that require precise voltage monitoring.

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