ACT4533BYH-T

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The ACT4533BYH-Tis a PMIC - Voltage Regulators - DC DC Switching Regulators. It is suitable for use as a synchronous buck/boost converter in a broad range of industrial and consumer applications, including notebooks, PDAs, and cell phones. It offers excellent efficiency, compact size, and low external component count. It is rated to operate over an input voltage range of 2.3 V to 5.5 V and delivers output currents up to 4A.

The ACT4533BYH-T has a simple circuit design, a small footprint, and a wide input voltage range. The device offers a single cycle soft-start, a programmable ramp voltage, internal frequency Foldback, cycle skip and adaptive gate drive. It is capable of input current monitor, under voltage lock out, over temperature protection and over current protection. The device also offers programmable current limits and a digital closed-loop voltage regulation with 1% regulation accuracy.

The ACT4533BYH-T is a synchronous buck/boost converter, meaning it converts the input voltage to a different output voltage, with the output voltage being either higher or lower than the input voltage. It accomplishes this by controlling the duty cycle of a series of switching MOSFETs, which transfers power from the input, and then regulates the output voltage by controlling the duty cycle of the switching MOSFETs.

The ACT4533BYH-T has a wide input voltage range of 2.3 to 5.5 V, with a typical switching frequency of 400kHz. The device can be used in either Positive Voltage Regulation (PVR) or Negative Voltage Regulation (NVR) mode. In PVR mode, the output voltage is higher than the input voltage, and in NVR mode, the output voltage is lower than the input voltage. The output voltage is regulated and the device supports programmable over-current protection with auto-retry.

The ACT4533BYH-T comes with a built-in phase-lock loop, allowing for phase-shifted operation between two devices to eliminate phase current. This means that two devices can seize current at the same time and operate at a fixed ratio, which allows for increased power efficiency at higher output power levels. This feature also allows the device to work at higher temperature and to sustain higher output currents and lower switching losses.

The ACT4533BYH-T also has integrated soft start, preventing the output current surge during startup. It also has programmable frequency foldback and cycle skip to reduce switching losses at light load conditions. The device can be used in a wide variety of applications, such as automotive, industrial, and telecommunications systems.

The ACT4533BYH-T has many features that make it attractive for a variety of industrial and consumer applications. It has a small form factor and a wide input voltage range. It has a simple circuit design with a small footprint, making it easier for designers to design around it. It also has high efficiency and excellent transient response. It has built-in current limiting, over voltage protection, and integrated soft start. It also has a programmable on-time and a digital closed-loop voltage regulation with 1% regulation accuracy. All these features make the ACT4533BYH-T an excellent choice for a wide range of high-power designs.

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