PT6601E

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DC-DC converters are electrical circuits which convert a DC input voltage into a DC output voltage. The PT6601E is a step-down synchronous buck regulator with 4-switch architecture and integrated MOSFETs. It is designed to provide a regulated voltage with very low ripple, efficiency and excellent transient response.

The PT6601E is ideal for applications requiring a 5V to 3.3V, 6V to 3.3V or 8V to 3.3V supply. It offers very low quiescent current of only 30µA under light load condition. The device can also be used in applications where a lower input voltage may be applied, such as 4.5V to 3.3V. The device is available in a small DFN package, making it ideal for space-constrained applications.

A typical application circuit for the PT6601E is shown below:

The PT6601E operates in either step-down or step-up mode. In step-down mode, the input voltage is reduced, while in step-up mode, it is increased. The device can be operated with a wide input voltage range, from 4.5V to 18V. The output voltage range is adjustable between 0.9V to 5.5V. The switching frequency can be adjusted from 200kHz to 2.2MHz.

The device provides excellent efficiency due to its 4-switch architecture. It also ensures a smooth transition from the input voltage to the output voltage, reducing the risk of oscillations or noise. The device is protected against over-current and over-temperature conditions, ensuring reliable operation. It also provides both peak current mode and average current mode control.

The PT6601E requires only a few external components for operation. This includes an inductor, an output capacitor and optionally, an input capacitor. The external components should be selected based on their ratings and the application requirements. It is important to use a low-ESR capacitor for the output as this will provide better performance.

The PT6601E offers a range of features which makes it suitable for many applications. It provides high efficiency and excellent transient response, making it ideal for stand-alone and embedded applications. Its low quiescent current and small size make it suitable for battery-powered and portable applications. The device is also protected against overloads and over-temperature conditions, ensuring reliable operation.

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