**LT8390IUFD#PBF: A 100V Synchronous Buck-Boost Controller for High-Performance Automotive and Industrial Systems**

In the demanding environments of modern automotive and industrial applications, power management solutions must deliver exceptional efficiency, reliability, and flexibility. The **LT8390IUFD#PBF** from Analog Devices is a synchronous buck-boost controller engineered specifically to meet these rigorous challenges. Operating with an input voltage range of 4V to 100V, this controller is capable of handling a wide array of power scenarios, from cold-crank conditions in vehicles to high-voltage transients in industrial machinery.

A key strength of the LT8390 lies in its **four-switch synchronous rectification architecture**, which allows for seamless transitions between buck, boost, and buck-boost operating modes. This ensures **high efficiency across a broad input voltage range**, making it ideal for applications where the input voltage can vary significantly and may be above, below, or equal to the output voltage. Its advanced current-mode control provides excellent line and load regulation, while its programmable switching frequency (from 100kHz to 1MHz) enables designers to optimize for efficiency or board space.

For automotive systems, the LT8390 is particularly valuable. It can **withstand load-dump transients up to 100V**, a critical requirement for 12V and 24V automotive battery systems. Its ability to maintain a constant output voltage through severe input variations ensures that sensitive infotainment, advanced driver-assistance systems (ADAS), and engine control units (ECUs) remain operational under all conditions. Furthermore, features like spread-spectrum frequency modulation help minimize electromagnetic interference (EMI), simplifying compliance with strict automotive EMC standards such as CISPR 25.

In industrial settings, the controller's robustness is equally beneficial. It can be used in 48V telecom systems, industrial automation, and battery-backed power supplies where input voltages are unpredictable. The device offers a suite of protection features, including **programmable overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown**, enhancing system reliability and safeguarding downstream components.

The LT8390IUFD#PBF is offered in a compact 28-lead QFN package, providing a high level of integration without sacrificing thermal performance. Its design supports both high-power and space-constrained applications, making it a versatile choice for next-generation power systems.

**ICGOOODFIND**: The LT8390IUFD#PBF stands out as a highly versatile and robust power management solution, expertly addressing the complex voltage regulation needs of automotive and industrial markets with its high input voltage capability, multi-topology operation, and comprehensive protection suite.

**Keywords**: High Voltage Input, Synchronous Buck-Boost, Automotive Grade, EMI Reduction, Programmable Frequency.