Maxim Integrated ICL7660ISA+ Voltage Converter

The ICL7660ISA+ is a highly efficient, monolithic, CMOS voltage converter manufactured by Maxim Integrated. This device is engineered to convert a positive voltage in the range of 1.5V to 10V to the corresponding negative voltage with minimal external components and design complexity. Its versatility and ease of use make it an ideal choice for a wide array of applications, including battery-powered devices, portable instruments, and power supply design.

At the core of the ICL7660ISA+ is a series of oscillators that generate a square wave at a frequency of 10kHz, which drives a set of four internal MOSFET switches. These switches work in conjunction with an external capacitor to perform the voltage conversion. The simplicity of this charge-pump converter allows for a compact design, as it only requires two external non-critical capacitors to function. This feature is particularly beneficial for space-constrained applications.

The ICL7660ISA+ offers an impressive power efficiency, which is crucial for battery-operated devices where power conservation is paramount. It also features a low power consumption of 1.5mA (typical) when unloaded, further enhancing its suitability for portable applications. Additionally, the device is capable of delivering an output current of up to 20mA with a voltage conversion efficiency of 99.9% under no-load conditions, making it a robust choice for driving small loads.

One of the key advantages of the ICL7660ISA+ is its ease of use. It comes in a standard 8-pin SOIC package, which is widely used and easy to integrate into various circuit designs. The device's reliability is backed by Maxim Integrated's reputation for producing high-quality semiconductor products.

In summary, the ICL7660ISA+ voltage converter from Maxim Integrated is a compact, efficient, and easy-to-use solution for generating a negative voltage from a positive input. Its low power consumption, minimal external component requirement, and ability to drive small loads make it an excellent choice for designers looking to incorporate a negative voltage supply into their applications.