NCV33161DR2G

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	2
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	--
Voltage - Threshold:	Adjustable/Selectable
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	NCV33161

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Introduction

NCV33161DR2G is a Supervisors from ON Semiconductor that provides voltage monitoring, brownout reset and power-on reset (POR). This voltage supervisor is designed to monitor power supply for microcontrollers, DSPs, and embedded systems. The NCV33161DR2G supervisor acts as an autonomous voltage supervisor, with no programming or additional components and provides fast, robust detection of under-voltage and over-voltage conditions, allowing microprocessor or microcontroller resetting to prevent system crashes or malfunction.

Application

NCV33161DR2G voltage supervisor can be widely used in a variety of electronic applications, including routers, modems, gaming systems, and servers. It is also a helpful solution for providing real-time system monitors in mobile device applications. Additionally, this voltage supervisor offers advantages in system hardware, simplified firmware debugging, and higher reliability. The NCV33161DR2G voltage supervisor is designed for embedded systems, where it can monitor the operating voltage and configure supply rail lockouts, along with generating an interrupt when power supply faults are detected. It offers a fast detection of power supply faults from under or over voltage conditions, allowing reset lines or system shutdowns. This supervisor also prevents unreliable power supply conditions from causing system malfunctions, preventing crashes and data loss in microprocessor-based designs. The NCV33161DR2G device can detect a wide range of voltages, meaning that it can be used in systems operating on voltage levels from 1.2V to 5.6V.

Features

The NCV33161DR2G voltage supervisor has a number of features that make it suitable for a wide range of applications. It features an autonomous voltage supervisor with no programming or additional components. It also features monitoring of a wide range of voltages from 1.2V to 5.6V, a reset output threshold of 1.8V and ± 0.55V accuracy. This voltage supervisor also offers an output voltage read back to indicate system power is good, as well as a reset pend detection output to indicate system reset. The NCV33161DR2G voltage supervisor also offers Operating Temperature Range of -40 to +125 and a wide selection of reset output types including active high/active low, push-pull/open-drain, open-drain and open-collector. Lastly, this supervisor boasts a maximum supply current of only 30μA and a minimum reset time of 2ms.

Working Principle

The NCV33161DR2G voltage supervisor works by monitoring the voltage at its reference pin and comparing it to predefined thresholds. When the voltages exceeds the upper voltage threshold, the supervisor\'s output will be taken low, thus causing the reset pulse to be generated. The reset pulse is created when the voltage exceeds the upper threshold for the determined period. When the voltage drops below the lower threshold, the supervisor\'s output will be taken high, generating a reset pulse similarly to the overvoltage situation. It is important to note that the output will only go high if it is already low, preventing unintended reset pulses from being generated. Once the reset pulse is generated, it will remain asserted until the voltage returns to an level above the reset threshold or until it is manually reset. The presence of power on the system is indicated via the power good output. This feature lets the user know that the system is powered up and can be used to confirm the power supply reliability.

Conclusion

The NCV33161DR2G voltage supervisor provides an invaluable source of power supply monitoring and resetting for embedded systems. It provides fast, robust detection of under-voltage and over-voltage conditions to prevent system crashes or malfunctions, as well as output voltage read back and interrupt signals when power supply faults occur. It is well-suited for a variety of applications from routers and modems to gaming systems and servers. Moreover, with its wide selection of reset output types and accurate voltage monitoring, the NCV33161DR2G is designed for efficient, reliable power supply monitoring.

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