ACT8892Q4I134-T

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The ACT8892Q4I134-T is a specialized PMIC (Power Management IC) that provides a comprehensive suite of power-management functions to facilitate highly integrated and advanced system designs. In particular, the ACT8892Q4I134-T is designed for applications where low output voltages and short-duration, low-current bursts are required. It is suitable for the design of systems such as notebooks, tablets and smartphones.

The ACT8892Q4I134-T integrates several important power management functions on a single chip, including VDD (primary supply), VIO (power-management integrated circuit pins), hot swap, VCON (power detector pins), current sensing and hot swap control. It can also be configured to provide voltage-level shifting, current-limit control and clock-gating functions. Additionally, the integrated adjustable soft-start circuitry ensures that all affected transistors are slowly ramped up to their operating voltage levels in order to reduce inrush current and minimize power-up-related EMI.

The basic topology of the ACT8892Q4I134-T is that of an integrated dual-switch buck converter with an internal voltage supervisor, which means that the device is capable of accommodating both constant-voltage and constant-current operation. Furthermore, the two switch elements can be controlled independently for improved efficiency, the internal clock-gating circuitry allows the device to exercise power-saving measures when the supply voltage drops below a certain level, and the adjustable soft-start circuitry allows the device to ramp up the output voltage rather than having it turn on instantly.

The ACT8892Q4I134-T requires an input voltage of between 3.3V and 5.5V, and can be used to generate output voltages of between 0.6V and 3.6V with a maximum output current of up to 6A. By consuming only between 0.1mA and 0.5mA of quiescent current, the device is able to reduce power consumption in battery-operated applications. In addition, the device features a programmable termination current detection threshold and a current overload event trigger, both of which can be used to ensure that the load does not exceed safe parameters.

The ACT8892Q4I134-T uses a combination of advanced technologies, such as voltage-mode control and adaptive transconductance compensation, in order to provide fast, smooth and stable load regulation. The device is also capable of operating in a wide range of environmental conditions, and comes in a 7mm x 12mm, 24-lead QFN package with exposed ground pad. It also includes protection against overvoltage, undervoltage, over-temperature, current limit and reverse-current conditions.

Overall, the ACT8892Q4I134-T is an excellent choice for application designs where low output voltages and short-duration, low-current bursts are required. Thanks to its wide input voltage range, low quiescent current, fast and stable load regulation and protection features, it offers a reliable and cost-effective solution to many professional and consumer applications.

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