The AO4803 is a N-Channel enhancement mode MOSFET from Alpha & Omega Semiconductor. This device is designed for power management applications, specifically targeting high-efficiency synchronous rectification in DC-DC converters. It features a low on-resistance (RDS(ON)) and a low gate charge for optimal performance.

Applications

• Synchronous Rectification in DC-DC Converters
• Power Management in Notebook Computers
• Load Switching

Features

• Low RDS(ON): RDS(ON) = 4.8mΩ (typ.) @ VGS = 10V
• Low Gate Charge: Qg = 23nC (typ.) @ VGS = 10V
• High Current Capability: ID = 30A
• Avalanche Rated
• 100% UIS Tested
• RoHS Compliant

Benefits

• High Efficiency: The low RDS(ON) minimizes conduction losses, improving overall efficiency in power conversion circuits.
• Reduced Power Dissipation: Low RDS(ON) reduces heat generation, leading to cooler operation and higher system reliability.
• Fast Switching: The low gate charge enables fast switching speeds, which improves transient response in DC-DC converters.

Additional Details

The AO4803 is available in a SO-8 package. It has a drain-source voltage (VDS) of 30V. The operating and storage junction temperature range is -55°C to +150°C.