The RT8241F is a high-performance, synchronous step-down DC-DC converter from Richtek USA Inc. designed for applications requiring a compact and efficient power solution. It is capable of delivering up to 3A of continuous output current. The RT8241F operates over a wide input voltage range of 4.5V to 18V. The device integrates low RDS(on) MOSFETs to minimize conduction losses and maximize efficiency. It utilizes an Advanced Constant On-Time (ACOT) control architecture for fast transient response and stable operation with ceramic output capacitors. The RT8241F incorporates comprehensive protection features, including over-voltage protection (OVP), under-voltage protection (UVP), over-current protection (OCP), and thermal shutdown to ensure system reliability.

Applications:

• Notebook Computers
• Tablet PCs
• LCD Monitors
• Portable Devices
• Embedded Systems

Features:

• Wide Input Voltage Range: 4.5V to 18V
• Up to 3A Continuous Output Current
• High Efficiency: Up to 95%
• Integrated Low RDS(on) MOSFETs
• Advanced Constant On-Time (ACOT) Control Architecture
• Fast Transient Response
• Stable with Ceramic Output Capacitors
• Over-Voltage Protection (OVP)
• Under-Voltage Protection (UVP)
• Over-Current Protection (OCP)
• Thermal Shutdown
• Available in a WQFN-16 (3x3) Package

Benefits:

• High Efficiency: Minimizes power dissipation and extends battery life in portable applications.
• Fast Transient Response: Maintains stable output voltage under rapidly changing load conditions.
• Integrated Protection Features: Enhances system reliability and prevents damage from fault conditions.
• Wide Input Voltage Range: Offers flexibility in power supply design.
• Small Package Size: Enables compact designs for space-constrained applications.

Additional Details:

The RT8241F's ACOT control architecture simplifies design and reduces the number of external components. It operates at a typical switching frequency of 500kHz, allowing for the use of smaller inductors and capacitors. The device features a power-good output to indicate the output voltage status. Additionally, it incorporates a soft-start function to limit inrush current during startup. The RT8241F is available in a thermally enhanced WQFN-16 (3x3) package and is compliant with RoHS standards.