Maxim Integrated MAX731CWE+ Step-Up DC-DC Converter

The MAX731CWE+ from Maxim Integrated is a high-efficiency, voltage-mode, step-up DC-DC converter designed to provide a reliable power solution for battery-powered devices and other low-voltage applications. This compact and versatile component is well-suited for portable electronics, where space is at a premium and power efficiency is crucial.

The device operates from an input voltage range of 2.7V to 11V, making it ideal for applications powered by single-cell lithium-ion (Li-ion) batteries, multiple alkaline/NiCd/NiMH cells, or other standard power sources. The MAX731CWE+ is capable of generating an adjustable output voltage up to 18V, which can be set using external resistors.

One of the key features of the MAX731CWE+ is its high-frequency operation, with a switchable frequency of up to 300kHz. This allows for the use of smaller, less expensive external components, such as inductors and capacitors, thus reducing the overall footprint and cost of the power supply design. Additionally, the device incorporates a pulse-frequency modulation (PFM) control scheme that enhances efficiency during light-load conditions by reducing the switching frequency to minimize quiescent current draw.

The MAX731CWE+ also includes a range of protective features to ensure the longevity and stability of the end application. These include thermal shutdown, current limit, and undervoltage lockout (UVLO). The thermal shutdown feature protects the device from overheating, while the current limit function prevents damage from overcurrent conditions. The UVLO feature ensures that the device operates within the safe voltage range of the power source.

Available in a 16-pin wide SO package, the MAX731CWE+ is designed to be easy to integrate into existing designs. Its robustness and high efficiency make it an excellent choice for designers looking to improve the performance and battery life of their portable devices.

Overall, Maxim Integrated's MAX731CWE+ is a powerful solution for those requiring a compact, efficient, and reliable step-up DC-DC converter in their electronic projects.