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TPS54310PWP Datasheet(PDF) 1 Page - Texas Instruments

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Part # TPS54310PWP
Description  3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS54310PWP Datasheet(HTML) 1 Page - Texas Instruments

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TPS54310
SLVS412A – DECEMBER 2001 – REVISED JUNE 2002
3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM
SWITCHER WITH INTEGRATED FETs (SWIFT
)
(6,3 mm x 6,4 mm)
Typical Size
FEATURES
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 Low-Voltage, High-Density Systems With
Power Distributed at 5 V or 3.3 V
D Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs, and
Microprocessors
D Broadband, Networking and Optical
Communications Infrastructure
D Portable Computing/Notebook PCs
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. TI 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.
VIN
PH
TPS54310
BOOT
PGND
COMP
VSENSE
AGND
VBIAS
Compensation
Network
Input
Output
SimplifiedSchematic
80
82
84
86
88
90
92
94
96
0
0.5
1
1.5
2
2.5
3
Load Current – A
TA = 25°C
VI = 5 V
VO = 3.3 V
EFFICIENCY
vs
LOAD CURRENT
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.
PowerPAD and SWIFT are trademarks of Texas Instruments.
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.
www.ti.com
Copyright
 2002, Texas Instruments Incorporated


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