ACT5805QI-T

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ACT5805QI-T is a type of power management integrated circuit (PMIC) that is specialized for a variety of applications. This particular IC is an application-specific integrated circuit (ASIC) that is designed for applications that require the integration of power supply ICs.

The ACT5805QI-T is a three-channel IC that can be used to distribute power from a battery or a wall adapter to multiple circuits. It is composed of two synchronous step-down (buck) and one step-up (boost) regulator, enabling it to regulate the output voltage of the battery or the wall adapter to the required level of the connected device.

The ACT5805QI-T is designed to support a variety of high-performance application and power-supply requirements. It provides very precise adjustable output voltage down to 0.1V, as well as a fast transient response time of 2µs. This makes it an ideal choice for applications such as smart phones and tablets, where precise voltage regulation and fast transient response time is required.

In addition, the ACT5805QI-T also provides comprehensive protection against short circuit, over-current, and over-temperature conditions. This ensures that the IC does not experience damage during unexpected events, such as a sudden surge of current from the wall adapter.

The ACT5805QI-T works by utilizing two voltage reference pins (VREF1 and VREF2) to set the output voltage. When the output voltage reaches the desired level, the IC reduces the output current to maintain the set voltage. This is done by means of a pulse width modulation (PWM) control scheme. The PWM control scheme is used to control the duty cycle of the MOSFETs that switch the voltage on and off. The duty cycle is determined by the voltage reference pins and the output voltage.

The ACT5805QI-T can also be used to switch the power to the connected device on or off by utilizing the enable pin. This is useful for applications such as smart phones and tablets, where the device needs to be powered on or off in order to save energy.

Overall, the ACT5805QI-T is a specialized PMIC that can be used for applications such as smart phones and tablets. It offers precise voltage regulation, fast transient response time, and comprehensive protection. It is also capable of switching the power to the connected device on or off to save energy, making it an ideal choice for applications that require precise regulation, fast response, and energy saving.

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