Maxim Integrated MAX681IUA+ Charge Pump Voltage Converter

The Maxim Integrated MAX681IUA+ is a versatile and efficient charge pump voltage converter that is designed to deliver a reliable power solution for a wide range of applications. This compact, high-frequency, switched-capacitor voltage converter can invert, double, or divide a voltage input, providing users with a flexible approach to power supply design.

The MAX681IUA+ operates with an input voltage range of 1.5V to 5.5V, making it suitable for battery-powered devices where the input voltage may vary significantly. It features a low quiescent current of only 110µA, which is particularly advantageous for portable equipment where power conservation is crucial.

This device is capable of delivering output currents up to 25mA with a typical voltage conversion efficiency of 99%. Its high efficiency is maintained over a wide range of load conditions, thanks to its low-resistance (1Ω typical) MOSFET switches. The converter's high switching frequency of 12kHz (typical) allows for the use of small, inexpensive capacitors, thus reducing the overall footprint and cost of the power supply circuitry.

The MAX681IUA+ comes in a space-saving 8-pin µMAX package, which is ideal for applications where board space is at a premium. The compact form factor, combined with its minimal external component requirement (only two capacitors needed for most applications), makes it a top choice for designers looking to minimize the size of their power supply circuits without compromising performance.

Applications for the MAX681IUA+ are diverse and include LCD bias supplies, flash memory programmers, RS-232/RS-232C power supplies, small LCD panels, and portable communication devices. Its reliability and versatility make it an excellent choice for engineers who need a simple, efficient, and space-saving solution for voltage conversion in their designs.

Overall, the Maxim Integrated MAX681IUA+ is a high-quality charge pump voltage converter that offers a combination of efficiency, flexibility, and compactness, making it an invaluable component in modern electronic systems.