
Semiconductor Components Industries, LLC, 2005
October, 2005 Rev. 1
1
Publication Order Number:
CS5165A/D
CS5165A
5Bit Synchronous CPU
Buck Controller
The CS5165A synchronous 5bit NFET buck controller is
optimized to manage the power of the next generation Pentium II
processors. It’s V
2
control architecture delivers the fastest transient
response (100 ns), and best overall voltage regulation in the industry
today. It’s feature rich design gives end users the maximum flexibility
to implement the best price/performance solutions for their end
products.
The CS5165A has been carefully crafted to maximize performance and
protect the processor during operation. It has a 5bit DAC on board that
holds a
±
1.0% tolerance over temperature. Its on board programmable
SoftStart insures a control startup, and the FET nonoverlap circuitry
ensures that both FETs do not conduct simultaneously.
The on board oscillator can be programmed up to 1.0 MHz to give
the designer maximum flexibility in choosing external components
and setting systems costs.
The CS5165A protects the processor during potentially catastrophic
events like overvoltage (OVP) and short circuit. The OVP feature is
part of the V
2
architecture and does not require any additional
components. During short circuit, the controller pulses the MOSFETs
in a “hiccup” mode (3.0% duty cycle) until the fault is removed. With
this method, the MOSFETs do not overheat or self destruct.
The CS5165A is designed for use in both single processor desktop and
multiprocessor workstation and server applications. The CS5165A’s
current sharing capability allows the designer to build multiple parallel
and redundant power solutions for multiprocessor systems.
The CS5165A contains other control and protection features such as
Power Good, ENABLE, and adaptive voltage positioning. It is
available in a 16 lead SOIC wide body package.
Features
V
2
Control Topology
Dual NChannel Design
100 ns Controller Transient Response
Excess of 1.0 MHz Operation
5Bit DAC with 1.0% Tolerance
Power Good Output With Internal Delay
Enable Input Provides Micropower Shutdown Mode
5.0 V and 12 V Operation
Adaptive Voltage Positioning
Remote Sense Capability
Current Sharing Capability
V
CC
Monitor
Hiccup Mode Short Circuit Protection
Overvoltage Protection (OVP)
Programmable SoftStart
150 ns PWM Blanking
65 ns FET Nonoverlap Time
40 ns Gate Rise and Fall Times (3.3 nF Load)
PbFree Packages are Available*
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
CS5165A
A
WL
YY
WW
G
= Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
PIN CONNECTIONS
SO16WB
DW SUFFIX
CASE 751G
MARKING
DIAGRAM
V
CC
ENABLE
1
16
GATE(H)
C
OFF
PGND
V
ID4
GATE(L)
SS
PWRGD
V
ID3
LGND
V
ID2
COMP
V
ID1
V
FB
V
ID0
1
16
http://onsemi.com
16
1
CS5165A
AWLYYWWG
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
Device
Package
Shipping
ORDERING INFORMATION
CS5165AGDW16
SOIC16
47 Units/Rail
CS5165AGDWR16
SOIC16 1000/Tape & Reel
CS5165AGDWR16G
SOIC16
(PbFree)
1000/Tape & Reel
CS5165AGDW16G
SOIC16
(PbFree)
47 Units/Rail