Maxim Integrated ICL7662EBA Voltage Converter

The ICL7662EBA from Maxim Integrated is a versatile and efficient CMOS voltage converter that is designed to provide a simple solution for generating a negative voltage from a positive voltage input. This device is ideal for applications requiring an inverted voltage rail, such as operational amplifiers, data converters, and portable equipment.

The ICL7662EBA operates by charging a capacitor from the positive input voltage during the first phase of the clock cycle and then connecting the charged capacitor in series with the input source to produce the inverted output during the second phase. This charge-pump action effectively doubles the voltage across the capacitor, thus generating a negative output voltage that is almost equal in magnitude to the positive input voltage.

Key features of the ICL7662EBA include:

• Wide operating voltage range: The device can handle input voltages from 1.5V to 12V, making it suitable for various battery-operated and portable devices.
• High power efficiency: The CMOS technology used in the ICL7662EBA ensures low quiescent current, which translates to high power efficiency and longer battery life in portable applications.
• Low output impedance: The device offers a low output impedance, which allows it to deliver a stable negative voltage even under varying load conditions.
• No external diode required: Unlike many other charge pump converters, the ICL7662EBA does not require an external diode, simplifying the circuit design and reducing the overall component count.
• Simple external components: The only external components required are two non-critical capacitors, which makes the ICL7662EBA very easy to implement in a wide range of applications.

The ICL7662EBA is available in an 8-pin SOIC package, which is small and surface-mountable, making it suitable for space-constrained applications. Its robust design ensures reliable operation over the industrial temperature range (-40°C to +85°C), making it a suitable choice for industrial applications as well.

Whether you are designing a portable device, an instrumentation system, or any other application requiring a negative supply voltage, the Maxim Integrated ICL7662EBA offers a compact, efficient, and reliable solution for your voltage conversion needs.