**LT8390JFE#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 is pushed to its limits. Systems must operate reliably under extreme conditions, including wide input voltage ranges, high transient voltages, and significant temperature fluctuations. Addressing these challenges head-on, the **LT8390JFE#PBF** from Analog Devices represents a pinnacle of power conversion technology, engineered to deliver **exceptional performance and robustness**.

This controller is a **synchronous buck-boost DC/DC regulator** capable of handling input voltages from 4 V to a remarkable 100 V. This incredibly wide operating range makes it perfectly suited for applications where the input supply can vary drastically, such as in **48V automotive systems** that must survive load-dump transients, or in industrial equipment powered by unregulated backplanes. The device seamlessly transitions between buck, boost, and buck-boost operating modes, maintaining tight regulation of the output voltage regardless of input conditions.

A key to its high performance is the **synchronous rectification architecture**, which utilizes four integrated N-channel MOSFET gate drivers. This design minimizes power loss traditionally associated with diode rectification, leading to **significantly higher efficiency** across a broad load range. For automotive systems, this translates to less wasted energy and reduced thermal stress, critical for improving fuel efficiency and system longevity. In industrial settings, it means cooler operation and higher reliability in densely packed control cabinets.

The LT8390JFE#PBF offers exceptional design flexibility. Its switching frequency is user-programmable from 100 kHz to 1 MHz, allowing engineers to optimize their design for either highest efficiency or smallest solution size. For noise-sensitive applications, it can also be synchronized to an external clock. Furthermore, its current-mode control provides **excellent transient response and loop stability**, ensuring the output remains clean and stable even during sudden changes in load or input voltage.

Built for resilience, the controller features a comprehensive suite of **protection features**, including programmable input and output current limiting, undervoltage lockout (UVLO), and thermal shutdown. These safeguards are indispensable in harsh environments, protecting both the controller and the downstream load from potential damage.

In summary, the LT8390JFE#PBF is a versatile and rugged power solution that sets a new standard for performance. Its ability to efficiently manage power from a wildly varying high-voltage input makes it an indispensable component for engineers designing the next generation of robust automotive and industrial systems.

**ICGOOODFIND:** The LT8390JFE#PBF is a superior choice for designers seeking a high-voltage, high-efficiency power solution that offers unparalleled flexibility and robust protection for the most demanding applications.

**Keywords:** High-Voltage Buck-Boost, Synchronous Controller, Automotive Power Management, Wide Input Voltage, High-Efficiency Conversion.