**LT8365EMSE#PBF: A High-Voltage, Current-Mode Boost/SEPIC/Inverting Converter with Wide Input Range**

The **LT8365EMSE#PBF** from Analog Devices is a highly versatile, monolithic switching regulator that stands out in the design of power management systems requiring high efficiency and flexibility. This current-mode DC/DC converter is engineered to operate across a remarkably **wide input voltage range from 2.8V to 60V**, making it an exceptional choice for a vast array of applications, including industrial, automotive, and telecommunications systems where input sources can be highly variable and unpredictable.

At its core, the LT8365 integrates a **high-efficiency 2A, 100V power switch**, which minimizes the need for external components and simplifies board layout. Its ability to be configured in **boost, SEPIC, or inverting topologies** provides system designers with unparalleled flexibility to generate positive or negative output voltages from a single IC. This is particularly valuable in systems that require both positive and negative rails, such as operational amplifier circuits or data acquisition systems.

A key feature of this converter is its **current-mode control architecture**, which offers excellent line and load transient response, simplifies loop compensation, and provides inherent pulse-by-pulse current limiting for enhanced circuit protection. Furthermore, the device operates at a fixed switching frequency of 2 MHz, which can be synchronized to an external clock from 300 kHz to 2.2 MHz, allowing designers to avoid critical noise-sensitive bands and optimize for efficiency or component size.

The **LT8365 is designed for high-voltage operation**, supporting output voltages up to 100V. This capability is crucial for applications like bias supplies for avalanche photodiodes (APDs), piezoelectric actuators, or industrial sensors. Its wide input range ensures reliable performance even during harsh automotive load-dump conditions or from unstable industrial power sources.

Additional built-in protection features, including **soft-start, frequency foldback, and thermal shutdown**, ensure robust and reliable operation under fault conditions, safeguarding both the converter and the downstream load. The device is offered in a thermally enhanced 16-lein MSOP package, which provides excellent thermal performance in a compact footprint.

ICGOODFIND: The LT8365EMSE#PBF is a powerhouse of integration and robustness, offering designers a single, flexible solution for generating a wide spectrum of output voltages from highly variable inputs. Its combination of a wide input range, high integration, and multiple configurable topologies makes it an indispensable component for challenging power design environments.

**Keywords:** High-Voltage Converter, Current-Mode Control, Wide Input Range, Boost/SEPIC/Inverting Topology, 100V Power Switch.