TPS54311-EP Datasheet, PDF (1/21 Pages) Texas Instruments – 3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT™)

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Typical Size
(6,3 mm x 6,4 mm)
TPS54311-EP, TPS54312-EP,
TPS54313-EP, TPS54314-EP,
TPS54315-EP, TPS54316-EP
SGLS376A – FEBRUARY 2007 – REVISED MARCH 2007
3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM
SWITCHER WITH INTEGRATED FETs (SWIFT™)
FEATURES
• Controlled Baseline
– One Assembly/Test Site, One Fabrication
Site
• Extended Temperature Performance of –55°C
to 125°C
• Enhanced Diminishing Manufacturing Sources
(DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree ⁽¹⁾
• 60-mΩ MOSFET Switches for High Efficiency
at 3-A Continuous Output Source or Sink
Current
• 0.9 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V and 3.3 V Fixed
Output Voltage Device With 1% Initial
Accuracy
• Internally Compensated for Low Parts Count
• 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
(1) Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
temperature cycle, autoclave or unbiased HAST,
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
performance and environmental limits.
APPLICATIONS
• Low-Voltage, High-Density Systems With
Power Distributed at 5 V or 3.3 V
• Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs, and
Microprocessors
• Broadband, Networking and Optical
Communications Infrastructure
• Automotive Telematics
PWP PACKAGE
(TOP VIEW)
AGND
1
VSENSE
2
NC
3
PWRGD
4
BOOT
5
PH
6
PH
7
PH
8
PH
9
PH
10
20
RT
19
FSEL
18
SS/ENA
17
VBIAS
16
VIN
15
VIN
14
VIN
13
PGND
12
PGND
11
PGND
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
As A member of the SWIFT family of dc/dc regulators, the TPS54311, TPS54312, TPS54313, TPS54314,
TPS54315 and TPS54316 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.
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.
SWIFT, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated