Maxim Integrated MAX856CUA-T Step-Up DC-DC Converter
The MAX856CUA-T is a high-efficiency, compact, step-up DC-DC converter designed by Maxim Integrated to provide a reliable power solution for battery-powered and low-voltage systems. This component is ideal for applications requiring a higher voltage output from a lower voltage input, such as handheld devices, portable media players, and other small electronics that demand a compact power management solution.
This versatile converter operates from an input voltage range of 0.7V to 5.5V, making it suitable for single-cell, multi-cell, or Li-Ion batteries, and can generate an adjustable output voltage up to 28V. It is housed in the space-saving 8-pin µMAX package, which is favored for designs where board space is at a premium.
The MAX856CUA-T employs a pulse frequency modulation (PFM) control scheme that provides high efficiency over a wide range of load conditions. This feature ensures that the power consumption is minimized during light loads, thereby extending battery life in portable applications. Additionally, the device features a low quiescent current and a shutdown mode that reduces the supply current to just 1µA (typical), further conserving power when the device is not in active use.
For design flexibility, the MAX856CUA-T includes an internal 2A, 0.3Ω (typical) switch that enables the device to deliver high output currents even with its miniature size. The high switching frequency of up to 500kHz allows the use of small, low-cost inductors and capacitors, reducing the overall footprint and bill of materials for the power supply design.
Protection features of this DC-DC converter include thermal shutdown and current limit, providing a safeguard against overheating and overcurrent conditions. These features ensure the longevity and reliability of both the converter and the end application.
In summary, the Maxim Integrated MAX856CUA-T is a powerful, efficient, and versatile step-up converter that provides design engineers with a compact power solution for a wide variety of low-voltage applications. Its high efficiency, adjustable output voltage, and protection features make it an excellent choice for portable and space-constrained designs.
