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FEATURES

Tracks Externally Applied Reference Voltage

30-mΩ MOSFET Switches for High Efficiency

at 8-A Continuous Output Source or Sink

Current

6% to 90% VI 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 TPS54872 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 3.8 V; an internally set

slow-start circuit to limit in-rush currents; and a status

output to indicate valid operating conditions.

The TPS54872 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.