Maxim Integrated MAX1697UEUT-T: High-Efficiency, Low-IQ, Step-Up DC-DC Converters

The MAX1697UEUT-T is a compact, high-efficiency, step-up DC-DC converter designed by Maxim Integrated to deliver a stable power supply for battery-powered devices. It is an ideal solution for applications requiring a small footprint and minimal power loss, such as handheld devices, portable media players, and other mobile equipment.

This step-up converter operates from a low input voltage of 0.7V, making it suitable for single-cell or dual-cell battery operations. It can deliver up to 200mA of output current with an input voltage range of 0.7V to 5.5V, ensuring reliable performance even when the battery voltage drops.

The MAX1697UEUT-T is equipped with an internal synchronous rectifier, which significantly improves its efficiency, especially at higher load currents. Its quiescent current is a mere 17µA, which is ideal for battery conservation in portable applications. The device also features a shutdown mode that reduces the quiescent current to less than 1µA, further extending battery life.

With a fixed 5V output voltage, this converter simplifies power supply design by eliminating the need for external resistors to set the output voltage. The MAX1697UEUT-T also includes an internal 2MHz oscillator that allows for the use of small surface-mount inductors and capacitors, reducing the overall solution size and cost.

Safety and reliability are key considerations in the design of the MAX1697UEUT-T. It features built-in overtemperature protection and current limiting to safeguard the device and the load from excessive heat and overcurrent conditions. Additionally, the converter's soft-start function minimizes inrush current at startup, which can prevent system glitches and improve the longevity of the battery.

The MAX1697UEUT-T is available in a tiny 6-pin SOT-23 package, making it an excellent choice for space-constrained applications. Its combination of high efficiency, low quiescent current, and compact size makes the MAX1697UEUT-T a versatile power solution for a wide range of portable electronics.