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2.95V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter


Package | PIN: RTE | 16
Temp: S (-40 to 150)
Carrier: Cut Tape
Qty Price
1-9 $2.22
10-24 $1.99
25-99 $1.86
100-249 $1.67
250-499 $1.56
500-749 $1.36
750-999 $1.17
1000+ $1.15


  • Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 3-A loads
  • Switching Frequency: 200 kHz to 2 MHz
  • Voltage Reference Over Temperature: 0.8 V ± 1%
  • Synchronizes to External Clock
  • Adjustable Soft Start/Sequencing
  • UV and OV Power-Good Output
  • Low Operating and Shutdown Quiescent Current
  • Safe Start-Up into Prebiased Output
  • Cycle-by-Cycle Current Limit, Thermal and Frequency Foldback Protection
  • Operating Junction Temperature Range: –40°C to 150°C
  • Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package
  • Create a Custom Design Using the TPS54318 With the WEBENCH® Power Designer

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Texas Instruments  TPS54318RTET

TheTPS54318 device is a full-featured, 6-V, 3-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54318 device enables small designs by integrating the MOSFETs,implementing current mode control to reduce external component count, reducing inductor size byenabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3 mm x 3 mm,thermally enhanced, QFN package.

The TPS54318 device provides accurate regulation for a variety ofloads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supplycurrent. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdownmode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming thethreshold with a resistor network on the enable pin. The output voltage startup ramp is controlledby the soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107%of its nominal voltage. Frequency foldback and thermal shutdown protects the device during anovercurrent condition.

For more SWIFT™ documentation, see theTI website at www.ti.com/swift.