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3V to 4V Input, 9A Synchronous Step-Down SWIFT™ Converter

Availability: 250


Package | PIN: VQFN (RUV) | 34
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $5.54
10-24 $4.99
25-99 $4.66
100-249 $4.18
250-499 $3.90
500-749 $3.39
750-999 $2.94
1,000+ $2.88


  • 13-mΩ MOSFET Switches for High Efficiency at 9-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 1.6 MHz
  • Load Protected by Peak Current Limit and Thermal Shutdown
  • Small 3.5 mm × 7 mm Package and Similar Layout to TPS54910 Reduces Board Area and Total Cost
  • SWIFT Documentation Application Notes, and SwitcherPro Software: http://www.ti.com/swift

Texas Instruments  TPS54917RUVT

As a member of the SWIFT™ family of DC-DC regulators, the TPS54917 low-input voltage high-output current synchronous buck PWM converter offers the same features as the TPS54910 in a smaller package and higher switching frequency, which allows for a smaller total solution. 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 (UVLO) 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 or logic reset, fault signaling, and supply sequencing.

The TPS54917 is available in a thermally enhanced 34-pin VQFN (RUV) PowerPAD™ package, which eliminates bulky heat sinks. 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.