CS5156
CPU 5-Bit Nonsynchronous
Buck Controller
The CS5156 is a 5–bit nonsynchronous 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 CS5156 is designed to operate over a
http://onsemi.com
MARKING
DIAGRAMS
4.25–16 V range (V ) using 12 V to power the IC and 5.0 V as the
CC
main supply for conversion.
The CS5156 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
CS5156
AWLYWW
1.0% output tolerance, V monitor, and programmable Soft Start
SOIC–16
D SUFFIX
CC
capability. The CS5156 is backwards compatible with the 4–bit
CS5151, allowing the mother board designer the capability of using
either the CS5151 or the CS5156 with no change in layout. The
CS5156 is available in 16 pin surface mount and DIP packages.
CASE 751B
1
16
1
Features
• N–Channel Design
• Excess of 1.0 MHz Operation
• 100 ns Transient Response
• 5–Bit DAC
16
CS5156
AWLYYWW
1
DIP–16
N SUFFIX
CASE 648
• 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
A
WL, L
YY, Y
= Assembly Location
= Wafer Lot
= Year
WW, W = Work Week
PIN CONNECTIONS
• Programmable Soft Start
• Lossless Short Circuit Protection
1
V
V
V
V
V
FB
ID0
ID1
ID2
ID3
• V Monitor
CC
COMP
LGND
• Adaptive Voltage Positioning
2
• V Control Topology
V
CC1
SS
NC
• Current Sharing
• Overvoltage Protection
V
ID4
PGND
C
V
OFF
GATE
CC2
V
FFB
V
ORDERING INFORMATION
Device
Package
Shipping
48 Units/Rail
2500 Tape & Reel
25 Units/Rail
CS5156GD16
CS5156GDR16
CS5156GN16
SO–16
SO–16
DIP–16
Semiconductor Components Industries, LLC, 2001
1
Publication Order Number:
January, 2001 – Rev. 10
CS5156/D