The RT8878A is a synchronous Buck controller with advanced constant on-time (ACOT™) mode control. It is designed for high-performance CPU and DDR power solutions. The RT8878A integrates a high-performance gate driver to drive high-side and low-side MOSFETs. The adaptive dead-time control further improves the efficiency. The IC uses a constant on-time architecture to provide the fastest transient response and requires the fewest external components. It also features over-voltage protection (OVP), over-current protection (OCP), under-voltage protection (UVP), and thermal shutdown protection.

Applications:

• Notebook Computers
• Desktop Computers
• Graphic Cards
• DDR Power

Features:

• Advanced Constant On-Time (ACOT™) Mode Control for Fast Transient Response
• High-Accuracy Voltage Regulation
• Adjustable Switching Frequency
• Integrated High-Performance Gate Driver
• Adaptive Dead-Time Control for Improved Efficiency
• Over-Voltage Protection (OVP)
• Over-Current Protection (OCP)
• Under-Voltage Protection (UVP)
• Thermal Shutdown Protection

Benefits:

• Provides a stable and efficient power supply for demanding applications.
• Reduces the number of external components required, saving board space and cost.
• Protects the system from damage due to over-voltage, over-current, under-voltage, and over-temperature conditions.
• Enables fast transient response for improved system performance.

Additional Details:

The RT8878A operates with an input voltage range of 4.5V to 25V and can provide an output voltage as low as 0.6V. It is available in a WQFN-24 (4x4) package. The switching frequency is adjustable and can be optimized for different applications. The OCP threshold is also adjustable, allowing the user to tailor the protection to their specific needs. Datasheets should be consulted for more specific parameters.