Maxim Integrated MAX684EUA+ Voltage Regulator

The MAX684EUA+ from Maxim Integrated is a highly efficient, compact, dual-output, step-up DC-DC converter designed to provide a reliable power solution for battery-powered devices. This component is engineered to deliver a fixed or adjustable output voltage, making it an ideal choice for a wide range of applications, including handheld devices, portable media players, and other mobile electronics that require a stable power supply.

The MAX684EUA+ operates from a low input voltage range of 0.7V to 5.5V, which allows it to be powered directly from single-cell batteries or multi-cell battery packs. It provides two regulated outputs: a main step-up output that can be set between 2.7V and 5.5V using external resistors, and a secondary fixed 5V output capable of delivering up to 100mA. This versatility makes the MAX684EUA+ an excellent choice for systems that require multiple voltage rails.

With its high-frequency operation at 1.2MHz, the MAX684EUA+ allows for the use of small, low-cost inductors and capacitors, resulting in a compact power supply design with minimal external components. The internal synchronous rectifier enhances efficiency and eliminates the need for an external Schottky diode, further simplifying the design and reducing overall system cost.

Additional features of the MAX684EUA+ include a low quiescent current, which extends battery life in portable applications, and a logic-controlled shutdown mode that reduces the supply current to less than 1µA, further conserving power when the device is not in active use. The device also incorporates thermal shutdown and current-limit protection to safeguard against over-temperature and over-current conditions, ensuring reliable operation under various stress scenarios.

Offered in a compact 8-pin µMAX package, the MAX684EUA+ is designed to occupy minimal board space, making it an excellent choice for space-constrained applications. Its robust design and comprehensive feature set ensure that the MAX684EUA+ is a high-performance solution for your power management needs.

For detailed specifications and application guidance, designers are encouraged to consult the MAX684EUA+ datasheet, which provides in-depth information to assist in integrating this voltage regulator into their designs.