TPS54310-Q1_15 Datasheet, PDF (1/19 Pages) Texas Instruments – 3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT)

Typical Size
(6,3 mm x 6,4 mm)
www.ti.com
TPS54310-Q1
SGLS280D − JANUARY 2005 − REVISED JUNE 2009
3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM
SWITCHER WITH INTEGRATED FETs (SWIFT)
FEATURES
D Qualified for Automotive Applications
D 60-mΩ MOSFET Switches for High Efficiency
at 3-A Continuous Output Source or Sink
Current
D 0.9-V to 3.3-V Adjustable Output Voltage With
1% Accuracy
D Externally Compensated for Design Flexibility
D Fast Transient Response
D Wide PWM Frequency: Fixed 350 kHz,
550 kHz, or Adjustable 280 kHz to 700 kHz
D Load Protected by Peak Current Limit and
Thermal Shutdown
D Integrated Solution Reduces Board Area and
Total Cost
APPLICATIONS
D Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs, and
Microprocessors
D Automotive Systems
− Navigation Units
− Entertainment Modules
− Satellite Radio
D Industrial High-Density Systems With Power
Distributed at 5 V or 3.3 V
DESCRIPTION
As members of the SWIFT family of dc/dc regulators,
the TPS54310 low-input-voltage high-output-current
synchronous-buck PWM converter integrates all
required active components. Included on the substrate
with the listed features are a true, high-performance,
voltage error amplifier that provides high performance
under transient conditions, an undervoltage-lockout
circuit to prevent start up until the input voltage reaches
3 V, an internally and externally set slow-start circuit to
limit in-rush currents, and a power good output useful
for processor/logic reset, fault signaling, and supply
sequencing.
The TPS54310 device is available in a thermally
enhanced 20-pin TSSOP (PWP) PowerPAD
package, which eliminates bulky heatsinks. Texas
Instruments provides evaluation modules and the
SWIFT designer software tool to aid in quickly achieving
high-performance power supply designs to meet
aggressive equipment development cycles.
ORDERING INFORMATION^{
PACKAGED DEVICES
T_J
OUTPUT VOLTAGE
PLASTIC HTSSOP
(PWP)^}§
−40°C to 125°C
Adjustable down to 0.9 V
TPS54310QPWPRQ1
{_{For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site}
at http://www.ti.com.
}_{Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.}
§_{The PWP package is taped and reeled as indicated by the R suffix to the device type (i.e., TPS54310QPWPRQ1). See the Application section}
of the data sheet for PowerPAD drawing and layout information.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD and SWIFT are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  2008, Texas Instruments Incorporated