ACT4529YH-T0010EW

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The ACT4529YH-T0010EW is part of the voltage regulators within the DC/DC switching regulator category. It is designed to be used as a broad range power management solution, and it is well suited for applications that require high accuracy, low voltage conversion and ultra low power consumption while maintaining high efficiency. It is primarily used in a variety of DC-DC buck converter based application circuits, such as cellphone charging and laptop Power over Ethernet (PoE) applications.

An integrated boost converter is included in the regulator package, which is useful for providing higher output voltage either for powering or user selection. A single feedback pin is used to adjust the output voltage as well as detect the output voltage. A voltage regulator with over-current and short-circuit protection is available to protect the load from current surges. The regulator also has a low-power shutdown feature. This feature is useful for saving power during low-power operation.

The ACT4529YH-T0010EW consists of an integrated control IC with PWM control, power MOSFET switches, and an output current sense amplifier. The output current is sensed by the current sense amplifier and this signal is used to regulate the output voltage of the regulator. The current sense amplifier also provides over-current protection by triggering the shutdown mode if the output current exceeds the over- current threshold. The regulation loop is a closed loop based on an integrated current-mode PWM controller. The PWM controller is a voltage-mode type with an average output control, and is designed to provide a high frequency and constant output voltage.

The ACT4529YH-T0010EW features a wide range of input voltage capacity up to 40 V. It also supports a wide range of output voltage levels such as 0.8 V to 10 V, with a switching frequency range from 2 MHz to 5 MHz. The output ripple is less than 2 mV at full load. The efficiency is up to 98%. The IC includes several protection features such as load disconnect, input over-voltage protection, short-circuit protection, over-current protection, and thermal shutdown. The IC also has several enable and shutdown pins for easy system control.

The ACT4529YH-T0010EW is an ideal DC-DC buck converter solution for applications that require a high accuracy, low voltage conversion, and ultra low power consumption while maintaining high efficiency. It is a great choice for applications such as mobile phone chargers, laptop power over ethernet solutions, and other power management solutions that require high accuracy, low voltage conversion and ultra low power consumption. It is also well suited for system solutions requiring high efficiency, low reference current, fast transient response, and low operating temperature.

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