Maxim Integrated MAX865EUA+ Voltage Converter

The MAX865EUA+ is a high-efficiency, voltage converter from Maxim Integrated that offers a compact and reliable solution for a wide range of applications. This versatile device is designed to convert a positive voltage in the range of 2.7V to 5.5V to the corresponding negative voltage, making it ideal for systems that require a dual power supply from a single positive supply rail.

The MAX865EUA+ comes in a small, 8-pin µMAX package, which is perfect for space-constrained applications. Its small form factor is complemented by its minimal external component requirement, as it only needs two small capacitors to function, thus saving board space and reducing overall system cost.

With its high switching frequency of up to 125kHz, the MAX865EUA+ allows the use of small, low-cost capacitors with lower ripple currents. This feature makes it an excellent choice for portable devices, where efficiency and battery life are critical. Additionally, the device features a low quiescent current of just 110µA, further enhancing its suitability for battery-operated equipment.

The MAX865EUA+ also includes built-in over-temperature and short-circuit protection, ensuring reliable operation under adverse conditions. Its internal oscillator, which sets the switch-mode power supply's frequency, is also temperature-compensated, which maintains stable operation over the full temperature range of -40°C to +85°C.

This voltage converter is widely used in applications such as LCD bias supplies, portable instruments, and op-amp power supplies. Its ability to provide a negative supply from a positive input makes it particularly useful in analog circuits that require both positive and negative rails.

Overall, the MAX865EUA+ from Maxim Integrated is a robust and efficient solution for generating a negative voltage rail, with its small size, low power consumption, and ease of use making it an excellent choice for designers looking to optimize their power supply architecture.