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
http://onsemi.com
MARKING
DIAGRAMS
over a 4.25−14 V range (V ) using 12 V to power the IC and 5.0 V as
CC
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,
16
16
1
CS5155
AWLYWW
1.0% output tolerance, V monitor, and programmable Soft Start
SOIC−16
D SUFFIX
CC
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.
CASE 751B
1
16
1
Features
• Dual N−Channel Design
16
CS5155
AWLYYWW
• 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
1
DIP−16
N SUFFIX
CASE 648
A
WL, L
YY, Y
= Assembly Location
= Wafer Lot
= Year
• 5.0 V & 12 V Operation
• Remote Sense
WW, W = Work Week
• Programmable Soft Start
• Lossless Short Circuit Protection
PIN CONNECTIONS
• V Monitor
CC
1
V
V
V
V
V
FB
ID0
ID1
ID2
ID3
• 25 ns FET Nonoverlap Time
• Adaptive Voltage Positioning
COMP
LGND
2
• V ™ Control Topology
V
CC1
• Current Sharing
SS
V
GATE(L)
• Overvoltage Protection
V
PGND
ID4
C
OFF
V
GATE(H)
V
CC2
V
FFB
ORDERING INFORMATION
Device
Package
Shipping
48 Units/Rail
2500 Tape & Reel
25 Units/Rail
CS5155GD16
CS5155GDR16
CS5155GN16
SO−16
SO−16
DIP−16
©
Semiconductor Components Industries, LLC, 2006
1
Publication Order Number:
July, 2006 − Rev. 4
CS5155/D