The CS51311GDR14 is a monolithic Buck regulator produced by Cherry Semiconductor Corporation (now part of Onsemi). It's designed to deliver a cost-effective solution for step-down (buck) voltage regulation. This regulator integrates a high-side N-channel MOSFET, which minimizes external component count and simplifies the design. It's particularly suitable for applications requiring efficient power conversion from a higher voltage source to a lower voltage.

Applications:

• Automotive Systems: Powering automotive ECUs (Engine Control Units) and other electronic modules.
• Industrial Control Systems: Providing regulated voltage for industrial automation equipment.
• Distributed Power Systems: Point-of-load regulation in various electronic systems.
• Set-Top Boxes: Supplying power to the internal components of set-top boxes.
• Networking Equipment: Regulating voltage for routers, switches, and other networking devices.

Features:

• Integrated N-Channel MOSFET: Reduces external component count and simplifies design.
• Wide Input Voltage Range: Operates from a broad range of input voltages, providing flexibility in various applications.
• Adjustable Output Voltage: Allows for precise adjustment of the output voltage to meet specific requirements.
• High Efficiency: Ensures efficient power conversion, minimizing energy loss and heat generation.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current.
• Thermal Shutdown: Prevents overheating by shutting down the regulator when the temperature exceeds a safe limit.
• Enable/Disable Function: Allows for remote control of the regulator's operation.
• Fixed Frequency Operation: Provides stable and predictable performance.

Benefits:

• Simplified Design: The integrated MOSFET reduces the need for external components, simplifying the design process and reducing board space.
• High Efficiency: The high efficiency of the regulator minimizes power loss and heat generation, improving overall system performance and reliability.
• Robust Protection: The overcurrent and thermal shutdown features protect the regulator and the load from damage, enhancing system reliability.
• Adjustable Output Voltage: The adjustable output voltage allows for flexibility in meeting specific application requirements.
• Wide Input Voltage Range: The wide input voltage range allows the regulator to be used in a variety of applications.
• Reduced BOM Cost: The integration of components reduces the overall bill of materials (BOM) cost.

Additional Details:

The CS51311GDR14 operates at a fixed switching frequency. It includes features such as cycle-by-cycle current limiting and thermal shutdown to protect the device and the load. The regulator's enable/disable function allows for controlled power sequencing and power saving modes. The device is typically available in a SOIC-8 package. It's designed for applications requiring high efficiency and a small footprint.