OptiMOS™ IPOL single-output synchronous buck regulator 40 A with pin programmability, SVID Interface OptiMOS™ IPOL TDA38641A is an easy-to-use, fully integrated, highly efficient 40 A synchronous buck regulator with pin programmability, and SVID. A proprietary fast COT engine enables a fast transient response and reduces the board footprint. TDA38641A offers best-in-class efficiency by using OptiMOS™ FETs, optimized for low-voltage high-current applications. Extensive protection features provide system-level security under fault conditions.