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TPS54377RHFTG4 Datasheet(PDF) 1 Page - Texas Instruments

Part # TPS54377RHFTG4
Description  1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT??CONVERTER WITH DISABLED SINKING DURING START-UP
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS54377RHFTG4 Datasheet(HTML) 1 Page - Texas Instruments

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1
FEATURES
DESCRIPTION
APPLICATIONS
VIN
PH
BOOT
PGND
VSENSE
Output
COMP
AGND
VBIAS
Input
TPS54377
*
*
* Optional
START-UP WAVEFORM
Simplified
Schematic
5.0 ms/div
VO = 1.8 V
VI = 3.3 V
RL = 1 Ω
RT
SYNC
SS/ENA
PWRGD
TPS54377
SLVS779 – SEPTEMBER 2007
www.ti.com
1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT™ CONVERTER
WITH DISABLED SINKING DURING START-UP
2
• 60-mΩ MOSFET Switches for High Efficiency
at 3-A Continuous Output Current
As a member of the SWIFT™ family of dc/dc
regulators,
the
TPS54377
low-input-voltage
• Adjustable Output Voltage Down to 0.9 V With
high-output-current
synchronous-buck
PWM
1% Accuracy
converter integrates all required active components.
• Switching Frequency: Adjustable From
Included on the substrate with the listed features are
280 kHz to 1600 kHz
a true, high performance, voltage error amplifier that
• Disabled Current Sinking During Start-Up
provides high performance under transient conditions;
an undervoltage-lockout circuit to prevent start-up
• Fast Transient Response
until the input voltage reaches 3 V; an internally and
• Load Protected by Peak Current Limit and
externally
set
slow-start
circuit
to
limit
in-rush
Thermal Shutdown
currents; and a power good output useful for
• Integrated Solution Reduces Board Area and
processor/logic reset, fault signaling, and supply
Total Cost
sequencing.
• Spacing Saving 4mm x 5mm QFN Packaging
For
reliable
power
up
in
output
precharge
applications, the TPS54377 is designed to only
• For SWIFT Documentation, Application Notes,
source current during start-up.
and Design Software, see the TI website at
www.ti.com/swift
The TPS54377 device is available in a thermally
enhanced 24-pin QFN (RHF) PowerPAD™ package,
which
eliminates
bulky
heatsinks.
TI
provides
evaluation modules and the SWIFT designer software
• Low-Voltage, High-Density Systems With
tool to aid in achieving high-performance power
Power Distributed at 5 V or 3.3 V
supply
designs
to
meet
aggressive
equipment
• Point of Load Regulation for High
development cycles.
Performance DSPs, FPGAs, ASICs, and
Microprocessors
• Broadband, Networking and Optical
Communications Infrastructure
1
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.
2
SWIFT, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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