RT9818A-36GY

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PMICs (power management integrated circuits) are widely used in various electronic systems and devices, providing accurate controlled and efficient power management. Supervisors are a type of PMICs, specifically dedicated to the purpose of detecting and regulating power to ensure the consistent and reliable operation of certain sensitive electronic components.

The RT9818A-36GY is a supervisor PMIC offered by Richtek, and is a boost voltage supervisor with a low voltage lockout capability. The feature set of this device makes it highly suitable for use in Li-ion battery packs, as well as other 3.3V/5V/3.3V applications.

The RT9818A-36GY is designed to provide a steady boost voltage to a 3.3V system and provide a low voltage lockout functionality. The boost voltage is adjustable up to 4.8V, and it is precise and stable to within ± 1%. The boost voltage and low voltage lockout settings can be easily configured using the digital potentiometer.

The low voltage lockout threshold can be adjusted from 0.6V to 5.3V. At any time, when the input voltage drops below the threshold, the RT9818A-36GY can safely turn off the voltage boost and isolate the system from the input voltage, ensuring the continued reliably operation of sensitive components. This feature helps to avoid serious damage that could result from voltages dropping too low.

The device also features short-circuit protection and over-temperature protection to protect the system from electrical and thermal damage. Both features are configurable through a simple resistive divider network.

The RT9818A-36GY also provides various user-configurable time delays, such as soft-start time, turn-on time and delay time. These settings ensure that the system will have enough time to properly power up and warm up before being exposed to full load voltage, thus increasing the system’s overall safety and reliability.

In addition, the device has an adjustable frequency hammer failure detection. When the frequency hammer failure occurs, the frequency exceeds the user-defined threshold, the output will be turned off to ensure that the system is still operating safely. The RT9818A-36GY is therefore ideal for Li-ion battery pack applications.

The RT9818A-36GY provides good protection and reliability in high-current environments, and is suitable for use in battery packs, 3.3V/5V/3.3V applications, automotive systems, Wi-Fi and Bluetooth modules, as well as other electronic systems. The device is compact and efficient, and is offered in a compact MSOP-10 package.

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