N84C161WD45TG

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PMIC - Supervisors

Integrated Supervisory Circuits, or ISCs, are important for providing reliable and accurate system supervision. ISC devices monitor and control the power supplies, clock and reset pins of system components. These ISCs also provide embedded protection against short circuits and overvoltages. The N84C161WD45TG Supervisor is one such ISC device developed by Nuvoton to provide a number of features such as undervoltage sensing and monitoring, reset, watchdog functions and general-purpose IOs (GPIOs).

Application Field

The N84C161WD45TG Supervisors have a wide range of applications, including but not limited to power supply regulation, power management functions, voltage regulation, automotive power control, LED driver control and embedded systems, among others. It is ideal for use in power supplies, battery-backed systems, automotive body control, automotive powertrain and industrial control systems. The N84C161WD45TG is also used to provide undervoltage sensing, overvoltage ready, low voltage detection and to detect shorts in power supplies.

Working Principle

The N84C161WD45TG Supervisors are monolithic integrated circuits (ICs) that provide a wide range of monitoring and control functions. The device monitors system power supplies for undervoltage and overvoltage conditions and responds by resetting the system, or by initiating a visual or audible alarm. Additionally, these supervisors can be programmed to respond to changes in the input voltage or detect shorts in the system power supply. The device also contains protection circuits for the power system and for general purposes.

The device has two pins at its inputs that sense the input voltage. The undervoltage and overvoltage thresholds can be programmed using the configuration options provided with the IC. When the input voltage drops below the programmed lower threshold, a reset signal is generated that resets all connected components. Similarly, when the input voltage rises above the higher threshold, an output signal is generated that can be used to generate an alarm or initiate other response action.

The device also includes a watchdog timer that can be triggered by a pulse generated by the GPIO pins. The watchdog pulse can then be used to reset a system if it has not been updated within a pre-defined amount of time. This is useful in applications that must function continuously, such as in medical or military systems. If the watchdog pulse is not received in the specified period of time, the supervisor will initiate a system reset.

Finally, the N84C161WD45TG Supervisors also provide embedded protection against short-circuit conditions on its inputs and outputs. The device will detect a short-circuit to ground or within the same voltage level and respond accordingly. This can help to protect connected components by preventing damaged caused by an unexpected short.

Conclusion

The N84C161WD45TG Supervisors offer a wide range of features and protection mechanisms in a single IC package. These supervisors can monitor and control the power supplies, clock and reset pins of system components, provide embedded protection against shorts, and include a watchdog timer for system supervision. The device is suitable for use in a range of applications including power supply regulation, power management functions, automotive power control and industrial control systems.

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