The FAN5182 is a highly efficient, multiphase, synchronous buck switching regulator controller optimized for converting a 12V main supply into a highcurrent, low-voltage supply for use in point-of-load (POL) applications. It uses a multi-loop PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for regulator size and efficiency. The phase relationship of the output signals can be programmed to provide 1-, 2-, or 3-phase operation, allowing for construction of up to three complementary, interleaved buck switching stages. The FAN5182 provides accurate and reliable overcurrent protection and adjustable current limiting. The FAN5182 is specified over the commercial temperature range of 0C to +85C and is available in a 20-lead Quarter-Size Outline Package (QSOP).