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CS5155
CPU 5-Bit Synchronous Buck Controller
CS5155
CPU 5−Bit Synchronous
Buck Controller
The CS5155 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 100 ns
response time to load transients. The CS5155 is designed to operate
over a 4.25−14 V range (VCC) using 12 V to power the IC and 5.0 V 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
CS5150, allowing the mother board designer the capability of using
either the CS5150 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 1.0 MHz Operation 100 ns Transient Response 5−Bit DAC Backward Compatible with 4−Bit CS5150/CS5151 30 ns Gate Rise/Fall Times 1.0% DAC Accuracy 5.0 V & 12 V Operation Remote Sense Programmable Soft Start Lossless Short Circuit Protection VCC Monitor 25 ns FET Nonoverlap Time Adaptive Voltage PositioningV2 ™ Control Topology Current Sharing Overvoltage Protection
