CS5157H Datasheet, PDF (1/16 Pages) Cherry Semiconductor Corporation – CPU 5-Bit Synchronous Buck Controller

CS5157H
CPU 5−Bit Synchronous
Buck Controller
The CS5157H 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 CS5157H is designed to operate
over a 4.25−20 V range (V_CC) using 12 V to power the IC and 5.0 V or
12 V as the main supply for conversion.
The CS5157H 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 CS5157H is available in 16 pin surface mount.
Features
• Dual N−Channel Design
• Excess of 1.0 MHz Operation
• 100 ns Transient Response
• 5−Bit DAC
• 30 ns Gate Rise/Fall Times
• 1.0% DAC Accuracy
• 5.0 V and 12 V Operation
• Remote Sense
• Programmable Soft−Start
• Lossless Short Circuit Protection
• V_CC Monitor
• 25 ns FET Nonoverlap Time
• V²t Control Topology
• Current Sharing
• Overvoltage Protection
• Pb−Free Packages are Available*
http://onsemi.com
16
1
SOIC−16
D SUFFIX
CASE 751B
MARKING DIAGRAM
16
CS5157HG
AWLYWW
1
CS5157H
A
WL
Y
WW
G
= Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
1
V_ID0
V_ID1
V_ID2
V_ID3
SS
V_ID4
C_OFF
V_FFB
16
V_FB
COMP
LGND
V_CC1
V_GATE(L)
PGND
V_GATE(H)
V_CC2
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2005
1
October, 2005 − Rev. 7
ORDERING INFORMATION
Device
Package
Shipping^†
CS5157HGD16
SO−16
48 Units/Rail
CS5157HGD16G SO−16
(Pb−Free)
48 Units/Rail
CS5157HGDR16 SO−16 2500/Tape & Reel
CS5157HGDR16G SO−16 2500/Tape & Reel
(Pb−Free)
†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.
Publication Order Number:
CS5157H/D