(6,3 mm x 6,4 mm)

Typical Size

1

FEATURES

APPLICATIONS

DESCRIPTION/ORDERING INFORMATION

TPS54310-EP

3-V TO 6-V INPUT, 3-A OUTPUT, SYNCHRONOUS BUCK PWM

SWITCHER WITH INTEGRATED FETs (SWIFT™)

2

• Controlled Baseline

• Adjustable Output Voltage Down to 0.9 V With

1% Accuracy

–

One Assembly Site

• Externally Compensated for Design Flexibility

–

One Test Site

• Fast Transient Response

–

One Fabrication Site

• Wide PWM Frequency: Fixed 350 kHz, 550

• Extended Temperature Performance of

kHz, or Adjustable 280 kHz to 700 kHz

–55

°C to 125°C

• Load Protected by Peak Current Limit and

• Enhanced Diminishing Manufacturing Sources

Thermal Shutdown

(DMS) Support

• Integrated Solution Reduces Board Area and

• Enhanced Product-Change Notification

Total Cost

• 60-mΩ MOSFET Switches for High Efficiency

at 3-A Continuous Output Source or Sink

• Low-Voltage High-Density Systems With

Current

Power Distributed at 5 V or 3.3 V

(1)

Component qualification in accordance with JEDEC and

• Point of Load Regulation for

industry standards to ensure reliable operation over an

High-Performance DSPs, FPGAs, ASICs, and

extended temperature range. This includes, but is not limited

to, Highly Accelerated Stress Test (HAST) or biased 85/85,

Microprocessors

temperature cycle, autoclave or unbiased HAST,

• Broadband, Networking, and Optical

electromigration, bond intermetallic life, and mold compound

Communications Infrastructure

life. Such qualification testing should not be viewed as

justifying use of this component beyond specified

• Portable Computing/Notebook PCs

performance and environmental limits.

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.

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.

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SWIFT, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, 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.