The LM5176QPWPRQ1 is a 55-V wide VIN synchronous 4-switch buck-boost controller manufactured by Texas Instruments. This switching controller is AEC-Q100 qualified, meaning it complies with the automotive industry's most demanding reliability requirements. It is built on a 28-Highly Thin Shrink Small Outline Package (HTSSOP), and is designed to operate across an operating temperature range of -40°C to 125°C. The LM5176QPWPRQ1 enables high-efficiency voltage conversion over a wide input voltage range, thanks to its 4-switch buck-boost controller architecture. This allows for seamless continuous operation between buck and boost ratios without any current or voltage transitions, reducing system complexity and saving board space. The device also features an analog voltage programming input pin, which allows for better voltage accuracy and improved utilization of batteries over their lifetime. In addition, the LM5176QPWPRQ1 is integrated with the latest protection features such as short-circuit protection, over-temperature protection, and under-voltage lockout for safer and efficient usage.