TPS54418RTER

ACTIVE

Features for the TPS54418

• Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 4-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 TPS54418 With the WEBENCH® Power Designer

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Description for the TPS54418

TheTPS54418 device is a full-featured, 6-V, 4-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54418 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 TPS54418 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.