CS5157H

CS5157H CS5157H CPU 5-Bit Synchronous Buck Controller Description The CS5157H is a 5-bit synchronous dual N-Channel buck controller. It is designed to provide unprecedented transient response for today’s demanding high-density, high-speed logic. The regulator operates using a proprietary control method, which allows a 100ns response time to load transients. The CS5157H is designed to operate over a 4.25-20V range (VCC) using 12V to power the IC and 5V or 12Vas the main supply for conversion. The CS5157H 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 CS5157H is available in 16 pin surface mount. Features s Dual N-Channel Design s Excess of 1MHz Operation s 100ns Transient Response s 5-Bit DAC s Backward Compatible with Adjustable CS5120/5121 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 V2TM Control Topology s Current Sharing s Overvoltage Protection 1200µF/10V x 3 AlEl 0.1µF VCC1 VCC2 VID0 VID1 VID2 VID3 VID4 330pF SS 0.1µF 0.33µF COMP LGnd VID0 VID1 VID2 VGATE(H) IRL3103 2µ H 1.3V to 3.5V @ 13A Package Options IRL3103 1200µF/10V x 5...