Maxim Integrated ICL7662CBD+ Charge Pump Voltage Inverter

The ICL7662CBD+ is a highly efficient, monolithic charge pump voltage converter manufactured by Maxim Integrated. Designed to provide a convenient and compact solution for inverting input voltages, this device is capable of delivering an output voltage that is the negative of the input voltage, making it ideal for various applications requiring a dual power supply from a single voltage source.

This versatile integrated circuit (IC) can generate a negative supply from a positive input with an input voltage range of 1.5V to 12V, making it suitable for battery-operated devices and other low-voltage applications. The ICL7662CBD+ can deliver a continuous output current up to 20mA with a typical open-circuit voltage conversion efficiency of 99.9% and a typical power efficiency of 98%, ensuring minimal power loss during the voltage conversion process.

The device features an oscillator frequency of 10kHz, which can be increased up to 45kHz by connecting an external capacitor to the OSC pin. This flexibility allows designers to optimize the trade-off between efficiency and external component size. Additionally, the ICL7662CBD+ includes an on-chip power MOSFET switch, which eliminates the need for external diodes, further reducing the overall component count and simplifying the circuit design.

Encased in an 8-pin SOIC package, the ICL7662CBD+ is designed for ease of implementation in space-constrained applications. Its operating temperature range of -40°C to +85°C ensures reliable performance across a wide range of environmental conditions. The device is also lead(Pb)-free and RoHS compliant, aligning with environmental standards and regulations for electronic components.

Applications for the ICL7662CBD+ include but are not limited to LCD displays, portable instruments, and operational amplifier power supplies. Its ability to provide a negative rail without the need for an inductor makes it a popular choice for designers looking for a simple and efficient voltage inversion solution.

Overall, the Maxim Integrated ICL7662CBD+ offers a practical and cost-effective approach to generating a negative voltage rail in a variety of electronic systems, combining ease of use with high performance in a compact form factor.