CS5211_06 Datasheet, PDF (1/13 Pages) ON Semiconductor – Low Voltage Synchronous Buck Controller

CS5211
Low Voltage Synchronous
Buck Controller
The CS5211 is a low voltage synchronous buck controller. It
contains all required circuitry for a synchronous buck converter using
external N−Channel MOSFETs. High current internal gate drivers are
capable of driving high gate capacitance of low R_DS(on) NFETs for
better efficiency. The V²â„¢ control architecture is used to achieve
unmatched transient response, the best overall regulation and the
simplest loop compensation. The CS5211 is in a 14−pin package to
allow the designer added flexibility.
The CS5211 provides overcurrent protection, undervoltage lockout,
Soft−Start and built in adaptive nonoverlap. The CS5211 also provides
adjustable fixed frequency range of 150 kHz to 750 kHz. This gives
the designer more flexibility to make efficiency and component size
compromises. The CS5211 will operate over a 4.5 V to 14 V range
using either single or dual input voltage.
Features
• Switching Regulator Controller
♦ N−Channel Synchronous Buck Design
♦ V² Control Topology
♦ 200 ns Transient Response
♦ Programmable Fixed Frequency of 150 kHz−750 kHz
♦ 1.0 V 1.5% Internal Reference
♦ Lossless Inductor Sensing Overcurrent Protection
♦ Hiccup Mode Short Circuit Protection
♦ Programmable Soft−Start
♦ 40 ns GATE Rise and Fall Times (3.3 nF Load)
♦ 70 ns Adaptive FET Nonoverlap Time
♦ Differential Remote Sense Capability
• System Power Management
♦ 5.0 V or 12 V Operation
♦ Undervoltage Lockout
♦ On/Off Control Through Use of the COMP Pin
• Pb−Free Packages are Available*
http://onsemi.com
SOIC−14
D SUFFIX
CASE 751A
MARKING DIAGRAM
14
CS5211xG
AWLYWW
1
CS5211x
A
WL
Y
WW
G
= Specific Device Code
x= E or G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
1
GATE(H)
BST
LGND
V_FFB
V_FB
COMP
SGND
PGND
GATE(L)
V_C
IS+
IS−
V_CC
R_OSC
*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, 2006
1
July, 2006 − Rev. 7
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
Publication Order Number:
CS5211/D