Maxim Integrated MAX1927REUB+ Overview

The MAX1927REUB+ is a high-performance, low-noise, high-efficiency, step-up DC-DC converter from Maxim Integrated, designed to deliver a fixed 5V or adjustable output voltage from a low-voltage input. This compact and versatile power solution is ideal for a wide range of portable devices such as PDAs, cell phones, and wireless modems, where space is at a premium and battery life is of paramount importance.

Key Features

• High Efficiency: The device boasts an efficiency of up to 96%, ensuring maximum battery life and minimal heat generation.
• Low Noise Operation: It features a low-noise, fixed-frequency (1.2MHz) PWM operation that helps in maintaining a quiet power supply, crucial for sensitive RF and audio applications.
• Flexible Output Voltage: While it provides a preset 5V output, the MAX1927REUB+ also offers an adjustable output option, allowing for a tailored voltage to meet specific application requirements.
• Low Quiescent Current: Its low quiescent current extends battery life by reducing standby power consumption.
• Small Package: The device comes in a compact, 10-pin µMAX package, making it suitable for space-constrained applications.

Protection Features

The MAX1927REUB+ is equipped with a variety of protection features to ensure reliable operation under various conditions:

• Soft-Start: Limits inrush current during startup, providing a smooth power-up sequence.
• Overload Protection: The built-in current limit protects the device and the load from damage due to overcurrent conditions.
• Thermal Shutdown: Protects the IC from overheating by shutting down the device if the internal temperature exceeds safe operating limits.

Applications

Thanks to its high efficiency, low noise, and compact form factor, the MAX1927REUB+ is well-suited for a variety of applications, including:

• Portable Electronic Devices
• Wireless and RF Powered Devices
• Handheld Computers and PDAs
• Battery-Powered Equipment
• Power Supply Modules

With its robust feature set and protective measures, the MAX1927REUB+ from Maxim Integrated stands out as a reliable and efficient solution for boosting battery voltages in portable electronic applications.