RT9818E-20GVL

The RT9818E-20GVL is part of a family of PMIC supervisors’, which are devices primarily used to control the power supply of an electronic circuit. This device is a resistor and capacitor-programmable digital supervisor that provides two voltage monitoring functions and a reset output in an ultra-small, thin form factor. It is used in a wide range of applications including mobile phones, tablets, notebook PCs, LCD TVs and monitor, as well as automobile and industrial applications.

This device boasts an ultra-accurate 1 percent voltage monitoring window and adjustable over-voltage (OV) and under-voltage (UV) threshold levels. In addition, it offers over-temperature (OT) detection, thermoregulation, and adjustable reset delay time up to four seconds. This device’s one-stop functionality ensures a safer and more reliable system.

The features of the RT9818E-20GVL include Power On Reset (POR) power up delay time, On-chip thermal protection, and an ultra-fast response time of 0.7ms. Additionally, this device has an LDOs as power supply source for less external components, as well as adjustable OV and UV thresholds with a ±1 percent accuracy. It also has an adjustable reset delay design with a longer reset de-bounce time up to 4 seconds.

The working principal of RT9818E-20GVL is based on the widely used “system on chip” (SoC) architecture. The IC includes two voltage comparative circuits, a voltage regulating circuitry and a reset output driver. The voltage comparators are used to detect whether the voltages at the two input pins, called the reference pins, are at the required limit. A reference voltage is applied to the reference pins. If the voltage on a reference pin exceeds or drops below the reference voltage by a certain amount, the corresponding comparator trips an output that is sent to the voltage regulator circuit. This voltage regulator circuit is responsible for setting the voltages to the required levels.

The reset output driver of the RT9818E-20GVL is triggered when the device is reset. The reset output is sent through an open drain output to the system to indicate the presence of reset. The device also includes a pins maintain their logic levels during power failure. The RT9818E-20GVL has an adjustable reset delay time which sets the duration of how long the reset signal can be repeatedly asserted.

The RT9818E-20GVL can be used in a variety of applications where a low-power digital supervisor is required. It is an ideal solution for systems requiring an over-voltage and under-voltage protection. This device also boasts on-chip thermal protection, making it well-suited for automotive and industrial applications. The combination of quick reset delay time, programmable reset response, independent output low-power operation, and adjustable reset time provides a cost-effective and reliable solution for system safety.

In conclusion, the RT9818E-20GVL is a powerful and cost-effective PMIC supervisor. It provides two voltage monitoring functions and a reset output in an ultra-small, thin form factor. This device simplifies system design by providing over-voltage and under-voltage protection, as well as adjustable reset delay time. Additionally, it has an ultra-accurate 1 percent voltage monitoring window and a LDOs as power supply source for less external components. The RT9818E-20GVL is ideal for mobile, communications, automotive and industrial applications.