Description
The CS5155 is a 5-bit synchronous dual N-Channel buck controller. It is designed to provide unprece dented 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 capabili ty 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
■ Dual N-Channel Design
■ Excess of 1MHz Operation
■ 100ns Transient Response
■ 5-Bit DAC
■ Backward Compatible with 4 Bit CS-5150/5151 and Adjustable CS-5120/5121
■ 30ns Gate Rise/Fall Times
■ 1% DAC Accuracy
■ 5V & 12V Operation
■ Remote Sense
■ Programmable Soft Start
■ Lossless Short Circuit Protection
■ VCC Monitor
■ 25ns FET Nonoverlap Time
■ Adaptive Voltage Positioning
■ V2ª Control Topology
■ Current Sharing
■ Overvoltage Protection