Maxim Integrated MAX771CPA Boost Converter

The Maxim Integrated MAX771CPA is a high-efficiency, CMOS, pulse-width-modulated (PWM), step-up DC-DC converter. Designed to provide a compact and flexible solution for power supply applications, this versatile component is capable of generating higher voltages from lower voltage inputs, making it ideal for battery-powered devices where extending battery life is crucial.

This particular model, the MAX771CPA, comes in an 8-pin DIP package and operates over a wide input voltage range from 2V to 16.5V, enabling it to work with various single-cell, multi-cell batteries, or other low voltage power sources. The device is capable of delivering an adjustable output voltage up to 28V, allowing designers to tailor the output to meet the specific needs of their application.

One of the key features of the MAX771CPA is its high frequency switching capability, which allows for smaller external components. The 300kHz switching frequency enables the use of tiny surface-mount inductors and capacitors, thus reducing the overall footprint and cost of the power supply design. Additionally, the device includes an internal 2A, 0.3Ω switch, further minimizing the need for external components.

The MAX771CPA also integrates several protection features to ensure reliable operation under various conditions. These include thermal shutdown, frequency foldback, and overvoltage protection. The frequency foldback feature helps prevent the converter from overheating by reducing the switching frequency under high load conditions, while the thermal shutdown provides an additional layer of safety by turning off the device if the internal temperature exceeds safe operating limits.

With its high efficiency, up to 96%, the MAX771CPA is an excellent choice for portable devices, where power conservation is paramount. Applications for this boost converter include LCD bias supplies, PDAs, GPS devices, portable media players, and other handheld devices.

Overall, the Maxim Integrated MAX771CPA boost converter offers a compact, efficient, and versatile solution for stepping up voltages in a wide range of electronic devices, ensuring optimal performance while extending battery life.