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TPS54310QPWPRQ1TIN/a81avaiQ1
TPS54310QPWPRQ1TI/BBN/a1030avaiQ1


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TPS54310QPWPRQ1
Automotive Catalog 3-V to 6-V Input 3-A Output Synchronous-Buck PWM Switcher
FEATURES Qualified for Automotive Applications 60-mΩ MOSFET Switches for High Efficiency
at 3-A Continuous Output Source or Sink
Current
0.9-V to 3.3-V Adjustable Output Voltage With
1% Accuracy
Externally Compensated for Design Flexibility Fast Transient Response Wide PWM Frequency: Fixed 350 kHz,
550 kHz, or Adjustable 280 kHz to 700 kHz
Load Protected by Peak Current Limit and
Thermal Shutdown
Integrated Solution Reduces Board Area and
Total Cost
APPLICATIONS
Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs, and
Microprocessors
Automotive Systems
− Navigation Units
− Entertainment Modules
− Satellite Radio
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
� 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.
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