Product Overview: MAX861ESA from Maxim Integrated

The MAX861ESA is a high-efficiency, low-voltage, step-up DC-DC converter designed by Maxim Integrated to provide a reliable power solution for battery-powered and low-power applications. This compact and efficient device is capable of converting input voltages as low as 0.8V to a selectable output voltage, making it an ideal choice for devices operating on single-cell batteries or other low voltage power sources.

Key Features

• Input Voltage Range: Operates from 0.8V to 10V, supporting a wide range of battery technologies and configurations.
• Adjustable Output Voltage: The output voltage can be set from 2V to 5.5V via an external resistive divider, accommodating various application requirements.
• High Efficiency: Up to 94% efficiency is achievable, minimizing power loss and extending battery life in portable devices.
• Low Quiescent Current: The quiescent current is as low as 5µA, which is beneficial for battery conservation in standby modes.
• Small Package: Available in an 8-pin SO package, the MAX861ESA is suitable for space-constrained applications.
• Shutdown Mode: Features a shutdown mode that reduces the supply current to 0.5µA, further enhancing battery life when the device is not active.

Applications

The MAX861ESA is versatile and can be used in a variety of applications, including but not limited to:

• Portable Electronic Devices
• Battery-Powered Equipment
• Handheld Medical Instruments
• Wireless Mice and Keyboards
• Personal Care Appliances
• Energy Harvesting Systems

Design and Integration

Designers will appreciate the MAX861ESA's simplicity in integration. The device requires only a few external components, including capacitors and an inductor, to create a complete power supply solution. Its adjustable output voltage feature allows for flexibility in design, ensuring compatibility with a range of peripherals and microcontrollers.

Conclusion

In summary, the MAX861ESA from Maxim Integrated is a robust and adaptable step-up converter that offers high efficiency and low-power operation. Its wide input voltage range, adjustable output voltage, and small footprint make it an excellent choice for designers looking to optimize power in their portable and low-voltage applications.