ROHM Semiconductor USA, LLC DC DC Switching Controllers BD9540EFV-E2

BD9540EFV-E2 is a dual-channel synchronous DC-DC switching regulator controller designed for applications such as desktop PCs, LCD TVs, and game consoles. It operates with an input voltage range of 7.5V to 20V and can generate output voltages from 0.75V to 5.5V. The controller utilizes Quarktwin Technology's proprietary H¬=Reg,Ñ¢ control method, which enhances transient response to load changes. Key features include built-in protections such as thermal shutdown, under-voltage lockout, adjustable over-current protection, over-voltage protection, and short-circuit protection. The device also incorporates a soft-start function to limit inrush current during startup. It is packaged in a compact HTSSOP-B28 format, making it suitable for space-constrained designs. The BD9540EFV-E2 is particularly well-suited for powering DRAM and graphics chips, offering high efficiency through the use of external N-MOSFETs.