The RT8120FGSP is a synchronous rectified buck converter from Richtek. It's designed for high-efficiency step-down DC-DC conversion in a variety of applications, particularly those requiring a small solution size and high power density.

Applications

• Notebook computers
• LCD monitors
• Set-top boxes
• Networking equipment
• Point-of-load regulators

Features

• Wide input voltage range: 4.5V to 18V
• Adjustable output voltage
• High efficiency: Up to 95%
• Synchronous rectification
• Overcurrent protection (OCP)
• Undervoltage lockout (UVLO)
• Thermal shutdown protection
• Small footprint package (SOP-8)

Benefits

• High Efficiency: Synchronous rectification minimizes switching losses, resulting in high efficiency and reduced heat dissipation.
• Wide Input Voltage Range: Operates reliably with a broad range of input voltages, making it suitable for diverse applications.
• Adjustable Output Voltage: Allows for flexibility in designing power supplies with different voltage requirements.
• Robust Protection: OCP, UVLO, and thermal shutdown provide comprehensive protection against potential faults, ensuring system reliability.
• Compact Size: The small SOP-8 package enables space-saving designs.

Additional Details

The RT8120FGSP operates at a switching frequency of 500 kHz. It uses a voltage-mode PWM control architecture. The device includes an internal soft-start function to limit inrush current during startup. The overcurrent protection is cycle-by-cycle current limiting. It is available in a SOP-8 (Exposed Pad) package. The operating temperature range is -40°C to +85°C. It requires a minimal number of external components, further simplifying the design process.