CS5212_06 Datasheet, PDF (1/13 Pages) ON Semiconductor – Low Voltage Synchronous Buck Controller

CS5212
Low Voltage Synchronous
Buck Controller
The CS5212 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 V²t control architecture is used to achieve
unmatched transient response, the best overall regulation and the
simplest loop compensation.
Additionally, the CS5212 provides overcurrent protection,
undervoltage lockout, soft−start, built−in adaptive non−overlap, and
an adjustable fixed frequency range of 150 kHz to 750 kHz, which
gives the designer more flexibility to make efficiency and component
size trade offs. The CS5212 will also operate over a 3.1 V to 7.0 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
− Available in Industrial and Commerical Temperature Grades
• System Power Management
− 3.3 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
CS5212x
AWLYWWG
1
CS5212x =
A
=
WL
=
Y
=
WW
=
G
=
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. 4
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
Publication Order Number:
CS5212/D