Maxim Integrated ICL7660CSA+ Voltage Converter

The ICL7660CSA+ is a highly efficient, monolithic charge pump voltage converter manufactured by Maxim Integrated. It is an ideal solution for projects that require a small, easy-to-use device that can invert a positive voltage to a negative one without the need for an external inductor. This makes it perfect for applications such as battery-powered devices, portable equipment, and memory backup systems, where space is at a premium and simplicity is key.

The ICL7660CSA+ operates by using a switched capacitor technique which is more power-efficient than linear regulators, especially when the difference between input and output voltage is large. It can deliver an output current of up to 20mA with a typical conversion efficiency of 99% at 1.5V. The device is capable of generating a negative voltage from a positive input voltage ranging from +1.5V to +10V. This feature makes it versatile for multiple applications that require a dual supply from a single battery source.

One of the standout features of the ICL7660CSA+ is its no-load quiescent current, which is typically 1.5mA. This low power consumption extends the life of battery-operated devices. Additionally, the converter comes in an 8-pin SOIC package, which is not only compact but also easy to integrate into a wide range of electronic circuits.

For ease of use, the ICL7660CSA+ includes an oscillator control pin that allows the user to adjust the oscillator frequency. This can be useful for reducing the output ripple voltage or for managing the trade-off between quiescent current and power efficiency. Furthermore, the device is designed to be used with small value capacitors, reducing the overall footprint of the power supply design.

In summary, the Maxim Integrated ICL7660CSA+ is a versatile, efficient, and compact voltage converter that is perfect for a variety of applications where a negative voltage rail is required. Its high efficiency, low power consumption, and ease of use make it an excellent choice for designers looking to simplify their power supply design while maximizing battery life.