The SY8143FCC is a high-efficiency synchronous buck regulator manufactured by Silergy Corp. It is designed for applications requiring step-down voltage conversion with high efficiency and compact size.

Applications

• Point-of-load regulation
• Portable devices
• Battery-powered systems
• Solid state drives (SSDs)
• Networking equipment

Features

• High efficiency: up to 95%
• Wide input voltage range: 2.5V to 5.5V
• Adjustable output voltage
• Integrated synchronous rectification
• Current-mode control
• Overcurrent protection
• Short-circuit protection
• Thermal shutdown protection
• Small package size: QFN-10

Benefits

• High Efficiency: Minimizes power losses and extends battery life in portable devices.
• Wide Input Voltage Range: Operates from a wide range of input voltages, providing flexibility in system design.
• Adjustable Output Voltage: Allows for precise adjustment of the output voltage to meet specific application requirements.
• Compact Size: Small package size enables compact and space-saving designs.
• Robust Protection: Overcurrent, short-circuit, and thermal shutdown protection features ensure reliable operation and prevent damage to the regulator and the connected load.

Additional Details

The SY8143FCC synchronous buck regulator integrates a high-side MOSFET and a low-side MOSFET into a single package. The synchronous rectification eliminates the need for an external Schottky diode, improving efficiency and reducing component count. The regulator uses current-mode control to provide stable operation and fast transient response. The overcurrent protection limits the output current to a safe level, preventing damage to the regulator and the connected load. The short-circuit protection shuts down the regulator in the event of a short circuit, preventing further damage. The thermal shutdown protection shuts down the regulator when the junction temperature exceeds a safe limit. Refer to the Silergy datasheet for detailed specifications, performance curves, and application guidelines.