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1FEATURES

? Tracks Externally Applied Reference Voltage

? 15-mΩ MOSFET Switches for High Efficiency

at 9-A Continuous Output Source or Sink

Current

? 6% to 90% V I Output Tracking Range

? Wide PWM Frequency: Fixed 350 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

APPLICATIONS

? DDR Memory Termination Voltage

? Active Termination of GTL and SSTL

High-Speed Logic Families

? DAC Controlled High Current Output Stage

? Precision Point of Load Power Supply

DESCRIPTION

As a member of the SWIFT? family of dc/dc

regulators, the TPS54972 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

enables maximum performance under transient

conditions and flexibility in choosing the output filter L

and C components; an under-voltage-lockout circuit

to prevent start-up until the input voltage reaches 3.0

V; an internally set slow-start circuit to limit in-rush

currents; and a status output to indicate valid

operating conditions.

The TPS54972 is available in a thermally enhanced 28-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.