The AOZ5516QI is a high-efficiency synchronous buck converter from Alpha & Omega Semiconductor (AOS). It is designed for point-of-load (POL) DC-DC conversion in a variety of applications, providing a compact and efficient power solution.

Applications

• Notebook computers
• Desktop computers
• Servers
• Graphics cards
• Networking equipment

Features

• Wide input voltage range: 4.5V to 18V
• Adjustable output voltage from 0.8V to V_IN
• Continuous output current up to 6A
• High efficiency up to 95%
• Integrated synchronous rectifier
• Over-current protection (OCP)
• Over-voltage protection (OVP)
• Under-voltage protection (UVP)
• Thermal shutdown protection
• Available in a QFN 3x3 package

Benefits

• High efficiency reduces power loss and heat generation, improving system reliability.
• Compact size enables smaller and more densely packed designs.
• Integrated protection features safeguard the device and the load from damage.
• Wide input voltage range provides flexibility in various applications.
• Adjustable output voltage allows for customization based on specific requirements.

Additional Details

The AOZ5516QI operates at a high switching frequency, which allows for the use of smaller external components, further contributing to the compact size of the solution. The integrated synchronous rectifier improves efficiency by reducing conduction losses. The device incorporates multiple protection features to ensure safe and reliable operation. The over-current protection limits the output current during overload conditions, while the over-voltage protection prevents the output voltage from exceeding a safe level. The under-voltage protection shuts down the converter when the input voltage drops below a certain threshold. Additionally, the thermal shutdown protection disables the device if the junction temperature exceeds a safe limit.

The AOZ5516QI is an ideal choice for applications requiring high efficiency, compact size, and robust protection features. It provides a complete and reliable power solution for a wide range of electronic devices.