The MAX861CSA is a highly efficient, CMOS charge-pump voltage converter manufactured by Maxim Integrated. This device is designed to convert a positive voltage in the range of 2.0V to 5.5V to a corresponding negative voltage of -2.0V to -5.5V. The MAX861CSA offers a simple and compact solution for applications requiring a small, negative supply voltage derived from a positive input.

Key Features

• High Efficiency: The device utilizes a switched-capacitor voltage conversion technique, which enables it to deliver a high efficiency of up to 99%, minimizing power loss and heat generation.
• No Inductors Required: The charge-pump operation eliminates the need for inductors, making the MAX861CSA ideal for space-constrained applications.
• Low Power Consumption: With a quiescent current of only 120μA, the MAX861CSA is suitable for battery-powered devices, ensuring longer battery life.
• High Output Current: The device can deliver an output current of up to 45mA, sufficient for a wide range of applications.
• Low Noise: The MAX861CSA features a low output ripple and noise, which is essential for sensitive analog circuits and precision applications.

Applications

The MAX861CSA is versatile and can be used in various applications that require a negative supply voltage. These include:

• Operational amplifier power supplies
• Interface power supplies
• Portable instruments
• Data acquisition systems
• Bias generators

Product Specifications

The MAX861CSA is available in an 8-pin SOIC package, offering a compact footprint for integration into a variety of electronic systems. Its robust design and reliable performance make it a preferred choice for designers looking to implement a negative voltage supply in their circuits.