LTC3728CUH - High Efficiency, Dual Synchronous Step-Down Switching Regulator

The LTC3728CUH, designed and manufactured by Linear Technology, is a high-performance, dual synchronous step-down switching regulator that offers a compact and efficient power management solution for a variety of applications. This regulator is housed in a QFN-32 package and is designed to operate over a wide input voltage range, making it suitable for use in systems powered by multi-cell batteries or regulated 5V and 12V power rails.

Key Features:

• Wide Input Voltage Range: The LTC3728CUH operates from an input voltage range of 2.75V to 9.8V, accommodating a variety of power sources.
• Dual Outputs: It features two independent output channels, each capable of delivering up to 3A of continuous output current, making it ideal for dual supply applications.
• High Efficiency: The device employs synchronous rectification to achieve high efficiency, which is crucial for battery-powered devices where power conservation is key.
• Adjustable Switching Frequency: The switching frequency is programmable from 200kHz to 600kHz, or it can be synchronized to an external clock, providing design flexibility and optimization of component size and efficiency.
• Current Mode Control: Current mode control provides excellent line and load transient response.

Applications:

The LTC3728CUH is versatile and can be used in a wide array of applications, including:

• Portable Computers
• Distributed Power Systems
• Networking Equipment
• Industrial Supplies

Protection Features:

The LTC3728CUH incorporates several protection features to ensure reliable operation under adverse conditions:

• Overcurrent Protection: Both channels have independent cycle-by-cycle overcurrent protection.
• Soft-Start: Integrated soft-start functionality limits inrush current during startup.
• Thermal Protection: Thermal shutdown circuitry protects the device from overheating.

With its robust feature set and dual-channel capability, the LTC3728CUH is a comprehensive power management solution that meets the needs of modern electronic systems requiring efficient, reliable power delivery.