**LTC1144CS8#TRPBF: A High-Efficiency Synchronous Step-Down Switching Regulator**

The **LTC1144CS8#TRPBF**, developed by Analog Devices, is a high-performance synchronous step-down (buck) switching regulator IC designed to deliver exceptional power conversion efficiency in a compact form factor. This device integrates **synchronous rectification** technology, which significantly reduces power losses traditionally associated with diode-based rectifiers. By replacing the conventional freewheeling diode with a low-resistance MOSFET switch, the LTC1144 minimizes voltage drop and heat generation, achieving peak efficiencies exceeding **90%** across a wide load range.

Operating from an input voltage range of **4.5V to 18V**, the regulator is highly versatile, making it suitable for a variety of applications including battery-powered systems, portable instruments, and distributed power supplies. Its output voltage can be adjusted from 2.65V to the input supply level using external resistors, providing design flexibility. The device employs a constant off-time architecture with a programmable frequency up to 200kHz, allowing designers to optimize the size of external components like inductors and capacitors, thereby balancing performance and board space.

A key advantage of the LTC1144 is its **low quiescent current** of just 1.5mA during operation and its ability to enter a sleep mode, drawing only 20µA when lightly loaded. This feature is critical for extending battery life in portable applications. The IC also includes built-in protection functions such as **soft-start** to limit inrush current and short-circuit protection, enhancing system reliability. Housed in an 8-pin SOIC package, it offers a robust solution for space-constrained designs while maintaining excellent thermal performance.

ICGOODFIND: The LTC1144CS8#TRPBF stands out as an efficient and reliable solution for modern power management, combining high efficiency, compact packaging, and critical protection features to meet the demands of diverse electronic systems.

**Keywords**: Synchronous Rectification, High Efficiency, Step-Down Regulator, Low Quiescent Current, Programmable Frequency.