TPS54350-EP_15 Datasheet, PDF (1/37 Pages) Texas Instruments – 4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FET (SWIFT™)

6,4 mm y 5,0 mm
TPS54350-EP
www.ti.com
SGLS308 – OCTOBER 2005
4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM
SWITCHER WITH INTEGRATED FET (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⁾
• 100 mW, 4.5-A Peak MOSFET Switch for High
Efficiency at 3-A Continuous Output Current
• Uses External Lowside MOSFET or Diode
• Output Voltage Adjustable Down to 0.891 V
With 2% Accuracy
• Synchronizes to External Clock
• 180° Out of Phase Synchronization
• Wide PWM Frequency – Fixed 250 kHz,
500 kHz or Adjustable 250 kHz to 700 kHz
• Internal Slow Start
• Load Protected by Peak Current Limit and
Thermal Shutdown
• Adjustable Undervoltage Lockout
• 16-Pin TSSOP PowerPAD™ Package
(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
• Industrial & Commercial Low Power Systems
• LCD Monitors and TVs
• Computer Peripherals
• Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs, and
Microprocessors
DESCRIPTION
The TPS54350 is a medium output current
synchronous buck PWM converter with an integrated
high side MOSFET and a gate driver for an optional
low side external MOSFET. Features include a high
performance voltage error amplifier that enables
maximum performance under transient conditions
and flexibility in choosing the output filter inductors
and capacitors. The TPS54350 has an
under-voltage-lockout circuit to prevent start-up until
the input voltage reaches 4.5 V; an internal slow-start
circuit to limit in-rush currents; and a power good
output to indicate valid output conditions. The
synchronization feature is configurable as either an
input or an output for easy 180° out of phase
synchronization.
The TPS54350 device is available in a thermally
enhanced 16-pin TSSOP (PWP) PowerPAD™
package. 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.
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, SWIFT 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 © 2005, Texas Instruments Incorporated