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1FEATURES

23· 30-mΩ MOSFET Switches for High Efficiency

at 6-A Continuous Output

· Adjustable Output Voltage Down to 0.9 V With

1% Accuracy

· Externally Compensated for Design Flexibility

· Wide PWM Frequency: Fixed 350 kHz, 550 kHz,

or Adjustable 280 kHz to 1.6 MHz

· Synchronizable to 1.6MHz

· Load Protected by Peak Current Limit and

Thermal Shutdown

· Small 3.5mm x 7mm Package and Similar

Layout to TPS54610 Reduces Board Area and

Total Cost

· SWIFT Documentation Application Notes, and

SwitcherPro? Software: www.ti.com/swift

APPLICATIONS

· Low-Voltage, High-Density Systems With

Power Distributed at 3.3 V or 5 V

· Point of Load Regulation for High Performance

DSPs, FPGAs, ASICs, and Microprocessors

· Broadband, Networking and Optical

Communications Infrastructure

DESCRIPTION

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

regulators, the TPS54617 low-input voltage

high-output current synchronous buck PWM

converter offers the same features as the TPS54610 in a small package and higher switching frequency.

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 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 TPS54617 is available in a thermally enhanced

34 pin QFN (RUV) PowerPAD? package, which

eliminates bulky heatsinks. TI provides evaluation

modules and the SwitcherPro? design software tool

to aid in achieving high-performance power supply

designs to meet aggressive equipment development

cycles.