Maxim Integrated MAX1721EUT-T Step-Up DC-DC Converter

The MAX1721EUT-T from Maxim Integrated is a high-efficiency, low-quiescent-current step-up DC-DC converter that is ideal for battery-powered applications. Designed to operate from a single-cell Lithium-Ion battery, this compact and versatile component can also run from other low-voltage sources such as alkaline or Nickel-Cadmium/Nickel-Metal Hydride cells.

With its tiny SOT23-6 package, the MAX1721EUT-T is an excellent choice for space-constrained applications, offering a minimal footprint while providing robust power management capabilities. The device is capable of delivering a fixed 5V or adjustable output voltage, making it suitable for a wide range of applications, from powering microcontrollers to driving LEDs.

The MAX1721EUT-T features a unique control scheme that allows for high efficiency over a wide range of load conditions. Its low quiescent current of only 5µA (typical) extends battery life, which is critical for portable devices. Additionally, the converter supports a high switching frequency of up to 500kHz, allowing the use of small, low-cost inductors and capacitors, further reducing the overall solution size and cost.

Protection features of the MAX1721EUT-T include thermal shutdown and current limit, ensuring reliable operation under a variety of conditions. The device also offers a logic-controlled shutdown mode, reducing the supply current to less than 1µA, which is essential for preserving battery life in power-sensitive designs.

Key specifications of the MAX1721EUT-T include:

• Input Voltage Range: 0.7V to 5.5V
• Output Voltage: 5V (fixed) or adjustable
• Quiescent Current: 5µA (typical)
• Shutdown Current: <1µA
• High Efficiency: Up to 96%
• Package: SOT23-6

Overall, the MAX1721EUT-T is a powerful, efficient, and flexible solution for boosting low voltages in portable electronics. Its high efficiency, low quiescent current, and compact form factor make it an excellent choice for designers looking to maximize battery life while minimizing space and cost.