The AIC1748AH-33GV5TR is a high-efficiency synchronous step-down (buck) DC-DC converter manufactured by Aic. It is designed to provide a stable 3.3V output from a higher input voltage, making it suitable for various power management applications where efficiency and compact size are critical. The device incorporates internal MOSFETs to minimize external components and improve overall performance.

Applications

• Point-of-Load (POL) Converters
• Portable Devices
• Notebook Computers
• Industrial Power Supplies
• Embedded Systems

Features

• High Efficiency: Achieves up to 95% efficiency, minimizing power dissipation.
• Wide Input Voltage Range: Operates from 4.5V to 18V input voltage.
• Fixed 3.3V Output: Provides a stable and accurate 3.3V output voltage.
• Synchronous Rectification: Integrates synchronous rectification for improved efficiency.
• Internal MOSFETs: Includes internal high-side and low-side MOSFETs to reduce external component count and simplify design.
• Current Mode Control: Uses current mode control for excellent line and load regulation.
• Overcurrent Protection (OCP): Features cycle-by-cycle current limit protection.
• Thermal Shutdown Protection (OTP): Includes thermal shutdown function to prevent overheating.
• Small Package: Available in a compact GV5TR package for space-constrained applications.

Benefits

• Extended Battery Life: High efficiency leads to longer battery life in portable devices.
• Stable and Accurate Output: Ensures reliable operation of downstream circuitry with a stable 3.3V output.
• Simplified Design: Integrated MOSFETs and minimal external components simplify the design process.
• Improved Thermal Performance: Synchronous rectification reduces power dissipation and improves thermal performance.
• Robust Protection: Overcurrent and thermal shutdown protection enhance system reliability.

Additional Details

The AIC1748AH-33GV5TR employs a constant frequency PWM (Pulse Width Modulation) control scheme. It also incorporates a soft-start function to limit inrush current during startup. The GV5TR package is RoHS compliant and lead-free.