Maxim Integrated MAX7660CUA+ Charge Pump Voltage Inverter

The Maxim Integrated MAX7660CUA+ is a highly efficient, CMOS charge-pump voltage inverter that delivers a simple solution for converting a positive voltage into a negative voltage with a minimal number of external components. Designed for flexibility, the MAX7660CUA+ is ideal for a wide range of applications including LCD displays, operational amplifier power supplies, and anywhere a negative supply is required from a positive input.

This device operates over a wide input voltage range from +1.5V to +5.5V, making it suitable for battery-operated devices as well as for fixed 3.3V or 5V power supply systems. With its high-frequency operation at 10kHz to 35kHz, the MAX7660CUA+ allows for the use of small, low-cost capacitors that minimize the size and cost of the overall design.

The MAX7660CUA+ comes in a compact 8-pin µMAX package, which is highly space-efficient and ideal for portable applications where space is at a premium. The device also features a low quiescent current of 100µA (typical), which helps to extend battery life in portable applications. Furthermore, the no-load quiescent current drops to a mere 20µA, further conserving power when the device is not driving a load.

One of the key advantages of the MAX7660CUA+ is its ability to provide a regulated output voltage without the need for inductors, simplifying the design and reducing noise susceptibility. Additionally, the device includes thermal shutdown and current limit features to protect against over-temperature and over-current conditions, ensuring reliable performance under a variety of operating conditions.

Overall, the MAX7660CUA+ from Maxim Integrated is a versatile and reliable choice for designers looking to generate a negative voltage rail in their electronic designs. Its ease of use, coupled with its robust feature set, makes it a go-to solution for a multitude of applications requiring efficient voltage inversion.