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FEATURES

Power Up/Down Tracking For Sequencing

15-mΩ MOSFET Switches for High Efficiency

at 9-A Continuous Output Source or Sink

Current

Wide PWM Frequency:

Fixed 350 kHz or Adjustable 280 kHz to

700 kHz

Power Good and Enable

Load Protected by Peak Current Limit and

Thermal Shutdown

Integrated Solution Reduces Board Area and

Component Count

APPLICATIONS

Low-Voltage, High-Density Distributed Power

Systems

Point of Load Regulation for High

Performance DSPs, FPGAs, ASICs and

Microprocessors Requiring Sequencing

Broadband, Networking and Optical

Communications Infrastructure

DESCRIPTION

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

the TPS54980 low-input voltage high-output current

synchronous buck PWM converter integrates all

required active components. Using the TRACKIN pin

with other regulators, simultaneous power up and down

are easily implemented. Included on the substrate with

the listed features are a true, high performance, voltage

error amplifier that enables maximum performance 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 V; an

internally or externally set slow-start circuit to limit

inrush currents; and a power good output useful for

processor/logic reset.

The TPS54980 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.