NCP112DG

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PMIC (Power Management ICs) supervisors have become increasingly popular as a reliable way to protect circuits from disruptive faults. NCP112DG is a supervisor IC from ON Semiconductor featuring dual active-low output powerfail and four active-low output reset signals. This versatile device is highly suitable for many common tasks such as power sequencer reset and power supply monitoring. In this article, we will discuss the application field and working principle of NCP112DG.

The application field of NCP112DG supervisor ICs is relatively broad. It is suitable for applications such as CPU and system reset, dual power-supply monitoring, input and output over-voltage protection and low level board reset. It can be used in a number of platforms, including server boards, industrial automation, general purpose industrial control, automotive, lighting control, medical systems and embedded applications.

Another major benefit of using NCP112DG is its ability to actively monitor two independent supplies with adjustable voltage levels. This IC allows for independent voltage levels for each of its supply inputs and can provide active-low reset outputs for each supply. The reset delays for each supply is independently adjustable from 0.1 to 128ms and can be latched or pulsed reset. This allows for efficient monitoring of both supplies and resetting after a fault has occurred.

The working principle of NCP112DG is relatively straightforward. It features a dual-channel detection system for monitoring both power supplies through independent voltage level inputs. For each input, an adjustable voltage level can be set up to detect an over-voltage or under-voltage condition. When either one of the input voltage levels is outside the range of voltage levels specified, the reset signals are generated. All of four reset signals are independent of each other and the reset timing can also be adjusted independently.

In addition to the dual-channel detection system, NCP112DG also features a thermal management system to protect against die temperatures exceeding its maximum rating. This is achieved by the combination of its thermal management system, PTC resistors and digitally enabled temperature compensation to accurately detect temperature. As a result, it ensures the most reliable and accurate monitoring of the temperature for any system.

Finally, NCP112DG supports a wide operating temperature range from -40°C up to +125°C. This makes it highly suitable for harsh operating temperatures that are found in many automotive, industrial, and embedded applications. It is also available with PowerFail and single reset functions, if more than one supply is not needed.

In summary, NCP112DG is an excellent supervisor IC from ON Semiconductor featuring dual active-low output powerfail and four active-low output reset signals. It is suitable for many applications such as CPU and system reset, dual power-supply monitoring, input and output over-voltage protection and low level board reset. It is highly reliable as it features a dual-channel detection system, thermal management system, PTC resistors and digitally enabled temperature compensation. Finally, its wide operating temperature range helps ensure that it can be used in any number of extreme conditions.

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