RT9819F-40GV

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PMIC, also known as Power Management Integrated Circuit, is a type of integrated circuit (IC) that helps to manage the power supply system of a device. It includes a voltage regulator, voltage reference, programmable current limit, temperature shut down capability and real-time clock. Supervisors are a type of PMICs that provide circuit monitoring, reset generator, and oscillator functions. This article focuses on the RT9819F-40GV and its application field and working principle.

RT9819F-40GV Overview

The RT9819F-40GV is a highly integrated power supervisor for advanced system power monitoring and reset generator. It is designed to monitor voltages from 0.6V to 4.0V. It supports very low power consumption for optimal system power savings. It also boasts low reset Threshold (0.5V). It has a guaranteed minimum reset timer to ensure reset accuracy and maximum device reliability. It is small in size, yet efficient with its on-chip 1MHz oscillator and master reset header pin. It also features power-on reset and system reset. This device is manufactured using TSMC\'s 30nm process.

Application Field

The RT9819F-40GV is widely used in various applications such as servers, storage systems, game consoles, desktops, laptops, tablets, and mobile phones and other smart devices. As mentioned, it is widely used in system power monitoring and reset generator applications. It is widely used in power-sensitive applications and is especially suitable for card-type products with tight size constraints. It can also be used in remotely controlled and monitored systems for automotive and industrial applications.

Working Principle

The working principle of the RT9819F-40GV is quite simple. When the device is first powered up, it performs a power-on reset operation. This operation sets all the support parameters in the chip and prepares it for the reset generation operation. During normal operation, the voltage is monitored to ensure that it remains above the reset threshold. If for any reason the voltage drops below the reset threshold, a reset signal is sent to the connected components. The reset timer ensures that the reset signal remains active until the connected component is reset. The chip also has an on-chip 1MHz oscillator which is used to accurately generate the reset signals and has a master reset header pin which can be used to manually reset the device.

Conclusion

The RT9819F-40GV is a highly integrated power supervisor for advanced system power monitoring and reset generator. It is a small device yet powerful, efficiently supporting power-on reset, system reset and voltage monitoring from 0.6V to 4.0V. Its on-chip 1MHz oscillator and master reset header pin help in accurate operations and manual reset support. It is widely used in servers, storage systems, game consoles, desktops, laptops, tablets, and mobile phones and other smart devices.

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