RT9818C-29GB

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PMIC - Supervisors are used in a wide range of applications, from consumer electronics and general purpose computing to industrial avionics and mission-critical military electronics. The RT9818C-29GB is a member of this family of Supervisors, and has been designed to enhance system performance and reliability. In this article we will talk about the different applications and working principles used by the RT9818C-29GB.

The RT9818C-29GB is a precision voltage supervisor with reset and watchdog timer for microprocessor systems. It provides a reset function to detect power supply or power supply brownout conditions and a watchdog timer to provide a reset if the microprocessor becomes non-functional due to software execution errors. It can monitor multiple power supply voltages and can be used with both 3.3V and 5V microprocessors.

The RT9818C-29GB is most commonly used in operational equipment such as computers, networking infrastructure, storage systems, servers, routers and embedded controllers, where maintaining reliability and levels of performance is critical. It can be used in both system power supplies and embedded 3.3/5V logic supplies. With its wide operating range, it also offers flexible options for logic supply sequencing.

The key features of the RT9818C-29GB include a reset and a watchdog timer, allowing for secure monitoring of system power, as well as resets for abnormal conditions such as power supply brownouts. The reset can be configured to occur at a voltage point that the system can safely handle and there is an adjusting for the width of the reset pulse. In addition, the reset can also be triggered by an external signal. The watchdog timer can be adjusted from 8 ms to 2.75 sec and has an adjustable time-out window.

In terms of working principle, the RT9818C-29GB uses a comparator and driver to detect power supply voltages that are out of tolerance and distinguishes them from normal interruptions. When a power supply voltage is below the set threshold voltage, the comparator triggers the comparator output pin, which in turn initiates a reset signal and the watchdog timer reset. The watchdog timer is used to monitor activity within the system, and will reset the system if no activity is detected for a set period of time. The comparator output and watchdog timer are both active low signals.

The RT9818C-29GB offers additional features such as an internal voltage regulator and voltage reference, low current consumption, a TTL / LVCMOS-compatible output, and a power-on reset pin. It comes in a small 8-Lead Pb-Free SOT-23 package and operates over a wide voltage range (2.7V - 7.0V).

The RT9818C-29GB is a great solution for microprocessor system designs where low power consumption and reliability are desired, and is suitable for a wide range of applications. With its advanced features and wide operating range, it is an excellent choice for many applications, from consumer electronics to industrial avionics and mission-critical military electronics.

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