Maxim Integrated MAX1691EUB+ Step-Up DC-DC Converter

The MAX1691EUB+ from Maxim Integrated is a high-efficiency, compact, step-up DC-DC converter designed for battery-powered and low-voltage applications. This versatile component operates from a minimum input voltage of 0.7V, making it ideal for single-cell or dual-cell battery-powered devices, as well as for boosting low-voltage power supplies.

Encased in a space-saving 10-pin µMAX package, the MAX1691EUB+ is engineered to provide a high level of performance in a minimal footprint, addressing the needs of portable electronic devices where space is at a premium. Its ability to start up with a low input voltage and run with high efficiency across a wide range of loads makes it a practical choice for products such as handheld devices, medical equipment, and wireless sensors.

The MAX1691EUB+ features a fixed 5V or adjustable output voltage, which allows designers to tailor the output to meet specific circuit requirements. Its quiescent current is exceptionally low, contributing to extended battery life in portable applications. Furthermore, the device includes an internal 2A switch, which enables it to deliver output currents high enough to drive most handheld devices without the need for external transistors.

For enhanced performance, the MAX1691EUB+ integrates several protection features. These include over-temperature protection and a current-limiting function to safeguard the device and the load from damage due to excessive heat or current. Additionally, the converter offers a shutdown mode that reduces the supply current to 1µA (typ), further conserving battery life when the device is not in active use.

With its high switching frequency of up to 500kHz, the MAX1691EUB+ allows for the use of small, low-cost capacitors and inductors, reducing the overall bill of materials and contributing to a more compact and economical design. Whether you're developing a new portable product or looking to improve the efficiency of an existing design, the MAX1691EUB+ offers a reliable and cost-effective power conversion solution.