CS5155

CS5155 CS5155 CPU 5-Bit Synchronous Buck Controller Description The CS5155 is a 5-bit synchronous dual N-Channel buck controller. It is designed to provide unprecedented transient response for todayÕs demanding high-density, high-speed logic. The regulator operates using a proprietary control method, which allows a 100ns response time to load transients. The CS5155 is designed to operate over a 4.25-14V range (VCC) using 12V to power the IC and 5V as the main supply for conversion. The CS5155 is specifically designed to power Pentium¨ II processors and other high performance core logic. It includes the following features: on board, 5-bit DAC, short circuit protection, 1.0% output tolerance, VCC monitor, and programmable soft start capability. The CS5155 is backwards compatible with the 4 bit CS-5150, allowing the mother board designer the capability of using either the CS-5150 or the CS5155 with no change in layout. The CS5155 is available in 16 pin surface mount and DIP packages. Features s Dual N-Channel Design s Excess of 1MHz Operation s 100ns Transient Response s 5-Bit DAC s Backward Compatible with 4 Bit CS-5150/5151 and Adjustable CS-5120/5121 s 30ns Gate Rise/Fall Times s 1% DAC Accuracy s 5V & 12V Operation s Remote Sense s Programmable Soft Start s Lossless Short Circuit Protection Application Diagram Switching Power Supply for core logic - Pentium¨ II processor 12V 5V s VCC Monitor s 25ns FET Nonoverlap Time s Adaptive Voltage Positioning s V2ª Control Topolog...