LTC3728EG/TR Dual High Performance Step-Down Switching Regulator Controller

The LTC3728EG/TR from Linear Technology is a versatile and high-efficiency dual step-down DC/DC switching regulator controller that is designed to drive all N-channel power MOSFET stages. Its advanced design and robust feature set make it ideal for a wide range of power supply applications, including telecommunications, networking equipment, and industrial systems.

Key Features:

• Wide Input Voltage Range: The LTC3728EG/TR operates from a 4V to 36V input, making it suitable for use with a variety of input sources, from standard 5V or 12V rails to higher voltage systems.
• Independent Dual Outputs: This controller provides two independent output channels, each capable of a step-down ratio as high as 1:10, allowing for flexible power supply designs that can meet a broad range of voltage requirements.
• High Operating Frequency: With an operating frequency range from 200kHz to 500kHz, the LTC3728EG/TR allows for the use of small inductors and capacitors, resulting in compact power supply designs.
• OPTI-LOOP® Compensation: The inclusion of OPTI-LOOP compensation enables the optimization of the transient response, which is critical in maintaining voltage stability under varying load conditions.
• Current Mode Control: Current mode control provides excellent line and load transient response, as well as cycle-by-cycle current limiting for enhanced protection.
• No RSENSE™: The LTC3728EG/TR features No RSENSE current sensing, which eliminates the need for a sense resistor and improves efficiency by reducing power loss.
• Phase-Lockable Fixed Frequency: The ability to synchronize to an external clock allows for noise-sensitive applications to minimize electromagnetic interference (EMI) by fixing the switching frequency.
• Thermal Protection: Built-in thermal shutdown ensures that the device operates within safe temperature ranges, protecting the system from overheating.

Applications:

• Telecommunications Infrastructure
• Networking Equipment
• Industrial Systems
• Multi-Output Power Supplies
• Point-of-Load Applications

The LTC3728EG/TR is available in a 28-lead SSOP package and is characterized for operation from -40°C to 85°C temperature range. With its precision features and durable design, this switching regulator controller is engineered to meet the stringent requirements of complex and demanding power management systems.