Maxim Integrated MAX1797EUA+ High-Efficiency, Low-IQ, Step-Up DC-DC Converters

The Maxim Integrated MAX1797EUA+ is an advanced, high-efficiency, low quiescent current (IQ) step-up DC-DC converter that is designed to deliver a reliable and consistent power supply. This compact and robust component is housed in a space-saving µMAX package, making it an ideal solution for portable electronic devices where space and power efficiency are critical considerations.

The MAX1797EUA+ operates from a 2.6V to 5.5V input voltage range, making it versatile for various battery configurations, including single-cell Li-Ion or three-cell NiMH/NiCd batteries. It can provide an adjustable output voltage from 2.7V to 5.5V, which allows designers to tailor the output to meet the specific requirements of their application.

One of the key features of the MAX1797EUA+ is its high efficiency, which can reach up to 94%, thanks to its low-resistance N-Channel MOSFET switch. The device also includes a 1.4MHz fixed-frequency PWM mode that helps to minimize the size of external components while providing a low-noise power supply.

With a low quiescent current of only 28µA, the MAX1797EUA+ is optimized for battery-powered applications where extending battery life is paramount. This feature, combined with a 0.1µA shutdown current, ensures minimal drain on the battery when the device is not in active use.

The MAX1797EUA+ also incorporates several protection features to safeguard the device and the load. These include a thermal overload protection that shuts down the device to prevent overheating, and a current-limit feature that protects the device from excessive input currents. Additionally, the device offers a true shutdown mode that disconnects the output from the input when disabled, preventing any leakage current through the device.

Overall, the Maxim Integrated MAX1797EUA+ is an excellent choice for designers looking for a power-efficient, high-performance step-up converter that is easy to integrate into a wide range of portable and battery-powered applications.