AUR9801DGD

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The AUR9801DGD can be classified under PMIC - Battery Chargers, and is a high efficiency non-isolated step-down battery charger. It is specifically designed for small and medium type of battery systems for mobile and appliance applications. It features a high efficiency non-isolated synchronous conversion architecture, adjustable voltage, high accuracy current regulation and user-defined cell balancing for improved system-level reliability.

AUR9801DGD works by the input voltage from the AC adapter or other sources being connected to the VIN pin. The internal MOSFETs then convert the input voltage to a regulated voltage which is delivered to the battery VBUS and VOUT pins. The voltage is regulated by the internal compensation circuit which compares the voltage delivered using a voltage sensing network. The maximum current allowed is then determined by the capability of the MOSFET drivers and the slew rate of the on-time.

The AUR9801DGD also features a soft-start function that gradually increases the output voltage to the desired level. This increases system stability, and allows the user to select an optimal start-up time to balance between safety and performance. The chip also features over-current protection, over-voltage protection, and over-temperature protection, which ensures system reliability and stability.

The AUR9801DGD provides a wide range of operating voltage options that can be used to maximize efficiency and performance. The operating voltage range of the AUR9801DGD is adjustable from 4V to 20V, and the output current can range from 0.2A to 3A. The device also supports 3 different charging modes: constant current charging, constant voltage charging, and constant voltage/constant current charging.

The AUR9801DGD also features a programmable balancing cell interface, which allows the user to balance the cells of the battery pack to ensure longer battery life and improved system performance. The cell balance function is provided on a separate pin, which helps to minimize the impact of the cell balance operation on the system.

The AUR9801DGD also features a versatile protection circuit and a 3-pin diagnostic interface. The protection circuit ensures that the battery is not damaged by overcharging or over-temperature conditions. The diagnostic interface provides information about the battery voltage, temperature, and current for use in monitoring and controlling the battery charge state.

The AUR9801DGD is a high-efficiency step-down battery charger designed for reliable, small and medium size battery systems. It features adjustable voltage and current regulation, user-defined cell balancing, and advanced protection circuits, making it suitable for a range of mobile and appliance applications.

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