CS5155

Features:

·Dual N-Channel Design
·Excess of 1MHz Operation
·100ns Transient Response
·5-Bit DAC
·Backward Compatible with
·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
· V_CC Monitor
·25ns FET Nonoverlap Time
·Adaptive Voltage Positioning
·V^2TMControl Topology
·Current Sharing
·Overvoltage Protection


Pinout




Specifications

Pin Name         Max Operating Voltage                 Max Current
V_CC1 . . . . . . . . . . . . . .16V/-0.3V . . . . . . . . .  25mA DC/1.5A peak
V_CC2 . . . . . . . . . . . . . .16V/-0.3V . . . . . . . . . .20mA DC/1.5A peak
SS . . . . . . . . . . . . . . .  .6V/-0.3V . . . . . . . . . . . . . . . . . . . -100A
COMP . . . . . . . . . . . . . .6V/-0.3V . . . . . . . . . . . . . . . . . . . .200A
V_FB . . . . . . . . . . .  . . . . 6V/-0.3V . . . . . . . . . . . . . . . . . . .  -0.2A
C_OFF . . . . . . . . . .  . . . .6V/-0.3V . . . . . . . . . . . . . . . . . . .  .-0.2A
V_FFB . . . . . . . .  . . . . . . 6V/-0.3V . . . . . . . . . . . . . . .  . . . .  -0.2A
V_ID0 - V_ID4 . . . . . . . .. .6V/-0.3V . . . . . . . . . . . . . . . . . . . . . 50A
V_GATE(H) . . . . . . . . . . .16V/-0.3V . . .  . . . . . 100mA DC/1.5A peak
V_GATE(L) . . . . . .  . . . . .16V/-0.3V . . .  . . . . . 100mA DC/1.5A peak
LGnd . . . . . . . . . . . . . . . . .0V . . . . . . . . . . . . . . . . . . . . . . . .25mA
PGnd . . . . . . . . . . . .  . . . . 0V . . .  . . . . . . . . 100mA DC/1.5A peak
Operating Junction Temperature, T_J  . . . . . . . . . . . .0° to 150°C
Lead Temperature Soldering Reflow
(SMD styles only) . 60 sec. max above  . . . . .183°C, 230°C peak
Storage Temperature Range, T_S . . . . . . . . . . . . .−65° to 150°C
ESD Susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . 2kV


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 (V_CC) 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, V_CC 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.