PT4128A

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DC to DC converters help in the transfer of DC power from a source to a load. They are commonly used in applications where the power requirements of the devices within the system have to be precisely regulated. One such DC to DC converter is the PT4128A, which is a dual output energy efficient DC to DC converter. It is used in various applications such as power management in mobile/portable devices, wall-plug adapters, and handhelds.

The PT4128A is designed to provide two regulated voltage outputs using a single device. It has a single-ended input and two differential output buck regulators. This device offers a wide input voltage range and two independent, adjustable regulated output voltages. It can also be used in parallel configurations to supply higher load currents.

The PT4128A can work with an input supply voltage range of 2.5V to 5.5V. Its two independent output voltage regulators can provide an output voltage range of 0.8V to VIN, with adjustable current limits of up to 3A. The device has an adjustable soft-start, programmable switching frequency and has excellent line/load regulation.

The device uses a high efficiency switch mode power supply (SMPS) technique that provides low quiescent (static) current operation in both the switching and off states. This means that the device keeps the current drain from the input supply to a minimum while operating. The device also has current and thermal protection features which provides protection against overload conditions and short circuits.

The PT4128A is known for its excellent power supply noise suppression. It has an internal power supply noise (PSNS) reduction (PNSR) circuitry that helps to reduce noise and ripple in the output current. The device also has a fast transient response time which helps it to efficiently provide clean and regulated output.

In summary, the PT4128A is a dual output energy efficient DC to DC converter that offers wide input voltage range, two independent regulated output voltages and excellent line and load regulation. Its unique features such as power supply noise suppression, fast transient response time, current and thermal protection, and low quiescent current operation all make it an ideal solution for a variety of applications including power management in mobile/portable devices, wall-plug adapters, and handhelds.

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