The LTC3728LIGN#PBF is a high-performance synchronous step-down DC-DC controller manufactured by Linear Technology Corporation, which is now a part of Analog Devices Inc. This integrated circuit (IC) component offers a wide range of features, making it suitable for various applications in automotive, industrial, and telecom sectors.
One of the key features of the LTC3728LIGN#PBF is its ability to regulate an output voltage from an input voltage that can range between 2.75V to 36V. The chip uses a constant frequency current mode architecture, enabling a stable and efficient power conversion process. With its high-frequency operation up to 2.25MHz, the controller provides fast transient response and reduces the size of external components, resulting in a compact and cost-effective design.
To meet different output voltage requirements, the LTC3728LIGN#PBF supports both single and dual output configurations. It can provide a maximum output current of up to 20A, which can be increased further by paralleling multiple devices. Moreover, the IC incorporates a voltage mode control loop, ensuring a tight regulation of the output voltage across load and line variations.
The LTC3728LIGN#PBF offers flexible and programmable soft-start capabilities, allowing designers to customize the power-up sequence and limit the in-rush current. Additionally, it includes an adjustable current limit feature that protects the power supply against overcurrent events and protects the load from excessive voltage drops
