Maxim Integrated MAX845CSA Monolithic Charge-Pump Voltage Inverter

The MAX845CSA from Maxim Integrated is a highly efficient, compact, and versatile monolithic charge-pump voltage inverter designed to provide a simple solution for generating a negative voltage from a positive voltage input. This device is housed in a space-saving 8-pin SOIC package, making it suitable for applications where board space is at a premium. It is an ideal choice for portable battery-powered devices as well as for industrial, medical, and telecommunications equipment that require a stable and reliable negative voltage rail.

The MAX845CSA operates over a wide input voltage range of 1.5V to 5.5V, making it compatible with a variety of power sources, including standard 3.3V and 5V systems. With its high conversion efficiency and low quiescent current, this voltage inverter ensures minimal power loss and extended battery life in portable applications. The device is capable of delivering up to 25mA of output current, sufficient for many low-power applications.

One of the key features of the MAX845CSA is its ability to operate at a high switching frequency of up to 10kHz. This allows for the use of small, low-cost capacitors, thus reducing the overall size and cost of the power supply design. Additionally, the charge-pump inverter includes built-in thermal overload protection, which safeguards the device and the system against excessive temperature conditions.

Installation and integration of the MAX845CSA are straightforward, thanks to its simple external circuitry requirements. Only two external capacitors are needed to complete the charge-pump circuit, thus simplifying the design process and accelerating time-to-market for products that incorporate this inverter.

In summary, the Maxim Integrated MAX845CSA is a reliable and efficient solution for generating a negative voltage supply in a broad range of applications. Its compact size, low power consumption, and ease of use make it an excellent choice for designers looking to optimize their power management solutions.