Introducing the MAX868EUB-T from Maxim Integrated

The MAX868EUB-T is a high-performance, compact, and versatile charge pump voltage inverter designed by Maxim Integrated. This integrated circuit (IC) is engineered to provide a simple and efficient solution for applications requiring a negative voltage rail generated from a positive input voltage. Its small form factor and minimal external components make it an excellent choice for space-constrained designs.

Key Features

• High Efficiency: The MAX868EUB-T utilizes a regulated charge pump that delivers a high efficiency of up to 99%, ensuring minimal power loss during voltage conversion.
• Wide Input Voltage Range: This device operates over a broad input voltage range from +2.7V to +5.5V, making it suitable for a variety of power sources including single-cell lithium-ion batteries.
• Adjustable Output Voltage: The output voltage is adjustable through external resistors, giving designers the flexibility to set the desired negative voltage for their specific application.
• Low Noise Operation: The charge pump operates at 12kHz fixed frequency, which minimizes noise and ripple, thus providing a clean and stable negative voltage output.
• Compact Package: The MAX868EUB-T comes in a microMAX-10 package, which is an ultra-small and thin package, ideal for portable and space-sensitive applications.

Applications

The versatility of the MAX868EUB-T makes it suitable for a wide range of applications, including but not limited to:

• Portable battery-powered devices
• Data acquisition systems
• Operational amplifier power supplies
• Handheld medical equipment
• Smartphone and tablet peripheral devices

Design and Integration

Designing with the MAX868EUB-T is straightforward due to its simple external circuitry. Only two external capacitors are required to complete the charge pump function, reducing the complexity and cost of the overall design. The device also features thermal overload protection and a low quiescent current, which enhances the reliability and extends the battery life of the end product.

For engineers and designers looking for a reliable and space-efficient solution to generate a negative voltage rail, the MAX868EUB-T from Maxim Integrated stands out as a robust choice that combines performance with practicality.