Maxim Integrated MAX1749EUK-T Step-Down DC-DC Converter

The MAX1749EUK-T from Maxim Integrated is a high-efficiency, low-voltage, synchronous rectified step-down DC-DC converter designed to deliver a continuous 600mA load current. This compact and versatile power solution is housed in a space-saving SOT-23 package, making it an ideal choice for portable devices where space is at a premium.

Key Features

• High Efficiency: Capable of up to 96% efficiency, the MAX1749EUK-T ensures minimal power loss during the conversion process, which is crucial for battery-powered applications.
• Adjustable Output Voltage: The output voltage is adjustable from 0.5V to V_IN, providing flexibility to power a wide range of devices.
• Low Dropout Operation: Its low dropout voltage allows the converter to continue to operate even when the input-to-output differential is small, extending battery life in portable applications.
• Internal Synchronous Rectifier: The inclusion of an internal synchronous rectifier enhances efficiency by reducing power loss during the rectification process.
• Low Quiescent Current: The device's quiescent current is just 110µA, which helps to conserve battery life in standby and light-load conditions.

Applications

The MAX1749EUK-T is well-suited for a variety of applications, particularly those requiring efficient power management in a small footprint. These include:

• Portable Media Players
• Mobile Phones
• Handheld Computers
• GPS Devices
• Wireless Peripherals

Technical Specifications

• Package Type: SOT-23
• Input Voltage Range: 2.5V to 5.5V
• Output Current: 600mA
• Switching Frequency: 1MHz (typical)
• Operating Temperature Range: -40°C to +85°C

The MAX1749EUK-T's combination of high efficiency, adjustable output, and low quiescent current makes it an excellent choice for designers looking to optimize power consumption in their portable and battery-powered applications.