DS1819AR-20-U

Series:	MicroMonitor™
Packaging:	Tube
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	3.3V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	DS1819

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Introduction to DS1819AR-20-U Supervisors

The DS1819AR-20-U Supervisors are one of the most sophisticated power management integrated circuit (PMIC) solutions provided today. It is designed to provide many of the required functions of a power supply in a single IC. The device offers an efficient solution for a wide range of applications in industrial and automotive markets.

Applications of DS1819AR-20-U Supervisors

The DS1819AR-20-U Supervisors are intended for use in advanced power system designs, enabling precise control of power supply parameters. The device provides critical power system monitoring, voltage and current sensing, and fault detection. It is suitable for industrial, automotive, and other applications.The device can be used in a variety of applications, including:

• Low voltage switching power supplies
• Telecom and datacom power supplies
• Inverters and motor drives
• UPS and other backup power systems
• Battery chargers and power conversion systems
• Automotive energy management systems

Working Principle of DS1819AR-20-U Supervisors

The DS1819AR-20-U Supervisors feature several integrated functions that enable precise control of voltages to maintain consistent power supply performance. The device comprises three main blocks: the voltage monitor, the voltage regulator, and the current monitor. The DS1819AR-20-U Supervisors has two pins for monitoring the input and output voltages. The device compares the sensed voltages with the internal reference voltage and adjusts the output voltage as needed. The device also includes an internal current monitor function which can be used to detect over-current conditions. When the monitored voltages and currents exceed the user set limits, the device will assert the INT pin, indicating that the power supply is not working properly. In such a situation, the device will generate a signal which will alert the system controller, enabling it to take the necessary steps.

Conclusion

The DS1819AR-20-U Supervisors provide a sophisticated power management solution for a wide range of industrial, automotive, and other applications. The device simplifies power system design by integrating critical functions in a single IC. It enables precise control of the power supply parameters, with built-in voltage and current monitoring functions. By providing accurate voltage and current control, the device helps to ensure consistent power supply performance.

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