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 by enabling 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 of loads with
an accurate ±1% voltage reference (VREF) over temperature.
Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-μA
typical supply current. Using the enable pin, shutdown supply current is reduced
to 2 μA by entering a shutdown mode.
Undervoltage lockout is internally set at 2.6 V, but can be increased by
programming the threshold with a resistor network on the enable pin. The output
voltage startup ramp is controlled by the soft-start pin. An open-drain power
good signal indicates the output is within 93% to 107% of its nominal voltage.
Frequency fold back and thermal shutdown protects the device during an
Use SwitcherPro power supply design software to create, manage and share
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For more SWIFT documentation, see the TI website at www.ti.com/swift.
all available packages, see the orderable addendum at the end of the datasheet.
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