The ICL7660M/TR is a monolithic CMOS voltage converter manufactured by Intersil (now Renesas), and likely also produced by other manufacturers such as HGSEMI. This device provides a simple and cost-effective way to generate a negative voltage from a positive supply. It's commonly used in applications requiring a negative voltage rail for operational amplifiers, data converters, and other analog circuitry.

Applications:

• Generating negative supplies for op-amps
• LCD bias supplies
• Memory power supplies
• Data acquisition systems
• Portable instrumentation

Features:

• Simple voltage inversion: Converts +V to -V
• High voltage conversion efficiency (typically >90%)
• Wide input voltage range (1.5V to 10V)
• Low quiescent current (typically 170µA)
• CMOS construction for low power consumption

Benefits:

• Eliminates the need for a separate negative power supply, simplifying system design.
• High efficiency minimizes power dissipation and heat generation.
• Suitable for battery-powered applications due to low quiescent current.
• Reduced component count and board space.
• Easy to use with minimal external components required.

Additional Details:

The ICL7660M/TR operates by switching capacitors to transfer charge from the positive supply to generate the negative voltage. It typically requires only two external capacitors for operation. The output voltage is approximately equal to the negative of the input voltage. It is packaged in an 8-pin SOIC package (as suggested by the '/TR' which often indicates tape and reel packaging). The operating temperature range is typically -55°C to +125°C.