Maxim Integrated MAX865EPA: High-Efficiency, Step-Up DC-DC Converter
The MAX865EPA from Maxim Integrated is a compact, high-efficiency, step-up DC-DC converter designed for battery-powered and low-voltage systems. This versatile component is ideal for applications requiring a regulated power supply from a lower voltage source. With its wide input voltage range and adjustable output, the MAX865EPA is suitable for a variety of portable devices, such as personal digital assistants (PDAs), digital cameras, and other handheld equipment.
The MAX865EPA operates from an input voltage as low as 0.7V, making it perfect for single-cell battery applications. It can deliver a selectable output voltage up to 22V, which is set by an external resistor divider. This flexibility allows the MAX865EPA to power OLED displays, CCD sensors, and other components that require a higher voltage than what the battery can provide.
One of the key features of the MAX865EPA is its high efficiency, which can reach up to 94%. This is achieved through an internal 0.8A current-limited switch and a quiescent current of only 110µA. The low quiescent current extends battery life by reducing the power draw when the device is in standby mode. Additionally, the MAX865EPA includes a thermal shutdown feature to protect the device under extreme conditions.
For design flexibility, the MAX865EPA comes in an 8-pin DIP package, which is easy to integrate into various circuit layouts. The device also offers a frequency operation of 8kHz, which allows for small, low-cost capacitors and inductors, further minimizing the overall footprint and cost of the power supply design.
Overall, the Maxim Integrated MAX865EPA is a reliable and efficient solution for designers looking to boost voltage in their low-power, portable applications. Its ease of use, combined with high efficiency and adjustable output, makes it an excellent choice for a wide range of electronic products.
