Maxim Integrated MAX1733EUK Step-Up DC-DC Converter

The MAX1733EUK from Maxim Integrated is a high-efficiency, compact, synchronous step-up DC-DC converter that is specifically designed for applications requiring a regulated power supply from a single-cell lithium-ion (Li-ion) battery or other low-voltage sources. This versatile component is ideal for portable electronic devices such as personal digital assistants (PDAs), digital cameras, and other equipment where extended battery life is crucial.

With an input voltage range of 0.7V to 5.5V, the MAX1733EUK is capable of delivering an adjustable output voltage from 2V to 5.5V, allowing it to power a wide range of devices. The converter operates at a fixed 500kHz switching frequency, which enables the use of small, low-cost external components, including ceramic capacitors and inductors, thus saving board space and reducing overall solution cost.

One of the key features of the MAX1733EUK is its high efficiency, which can reach up to 96%. This is achieved through the use of an integrated synchronous rectifier, which reduces power loss during the conversion process. Furthermore, the device has a low quiescent current of just 30µA, which contributes to its excellent battery life performance.

The MAX1733EUK also includes a range of protective features to ensure the safety and reliability of the end application. These features include thermal shutdown, which protects the device from overheating, and a current limit to prevent damage from overcurrent conditions. Additionally, the converter has an under-voltage lockout (UVLO) feature that ensures the device operates only when the input voltage is within its specified range.

Available in a small 5-pin SOT23 package, the MAX1733EUK is designed for space-constrained applications. Its compact size and high level of integration make it an excellent choice for designers looking to minimize the footprint of their power supply solution while maintaining high performance and efficiency.

Overall, the MAX1733EUK from Maxim Integrated is a robust, efficient, and versatile step-up converter that meets the needs of a wide array of portable applications, helping to extend battery life while providing a stable and regulated power supply.