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.